Events, Verisoph

15 June 1826 Auspicious Incident: Ottoman Sultan abolishes the Janissary corps 0 cit. After centuries of Janissary revolts, corruption, and resistance to military reform, Sultan Mahmud II provoked a Janissary uprising and then crushed it with loyal troops and artillery, killing thousands of Janissaries in Constantinople. He formally abolished the corps afterward, ending an institution that had repeatedly deposed and even executed sultans. The event, known as the Auspicious Incident, cleared the way for the sultan to build a modern, Western-style army. politics / war ●●●

11 September 1826 Disappearance of William Morgan 0 cit. William Morgan, a Freemason in western New York, was arrested on minor pretexts after announcing plans to publish a book exposing Masonic rituals, then vanished and was presumed murdered by fellow Masons. The affair ignited the Anti-Masonic movement across the region where the young Joseph Smith was growing up. The Anti-Masonic Party, formed in response, became the first significant third party in American politics. politics / society ●●

15 June 1826 The Auspicious Incident abolishes the Janissaries 0 cit. Sultan Mahmud II crushes a Janissary revolt with artillery and disbands the corps, killing thousands. Once an elite fighting force, the Janissaries had become a conservative bloc blocking military and state reform. Their destruction cleared the way for a modern army and the reforms that followed. politics / society / war ●●

c. 1828 to c. 1838 The Anti-Masonic Party 0 cit. Public anger after the Morgan affair fueled the Anti-Masonic Party, the first significant third party in United States history. It held the first national nominating convention in 1831 and ran William Wirt for president in 1832. politics / religion / society ●●●

1828 Anti-Masonic Party founded 0 cit. In the wake of the Morgan Affair, opponents of Freemasonry organized the Anti-Masonic Party, the first significant third party in United States history. The party held the first national nominating convention of any American party in 1831 and ran William Wirt for president in the 1832 election. Though short-lived as a national force, it pioneered convention politics still used by major parties today. politics / society ●●

February 1828 Russia takes Eastern Armenia 0 cit. The Treaty of Turkmenchay ends a Russo-Persian war and transfers Eastern Armenia, including Yerevan and Nakhichevan, from Persia to the Russian Empire. Many Armenians welcome Russian rule as protection for a Christian population, and some migrate from Persian and Ottoman lands into Russian territory. This division, Russian east and Ottoman west, shapes the modern Armenian story. diplomacy / politics / war ●●

29 September 1829 Metropolitan Police Act passed, creating London's police force 0 cit. Home Secretary Robert Peel steered the Metropolitan Police Act through Parliament, establishing a centralized, uniformed police force for London under civilian control. The first officers, nicknamed 'Bobbies' or 'Peelers' after Peel, began patrolling in September 1829. The force was explicitly designed to prevent crime through visible patrol rather than merely react to it, and became the template copied by cities worldwide. politics ●●●

c. 1829 Peel's Principles of policing articulated contested 0 cit. Alongside the founding of the Metropolitan Police, a set of guidelines known as Peel's Principles circulated, holding that police exist to prevent crime and disorder, that their power depends on public approval, and that the police are the public and the public are the police. Historians debate whether Peel personally wrote these exact words, but the principles reflected the stated philosophy of the new force. They remain a touchstone for debates about policing by consent versus policing by force. politics ●●

1829 Peel's Metropolitan Police Act 0 cit. Home Secretary Robert Peel established London's Metropolitan Police as a civilian force distinct from the army, built around the idea that ordinary policing should rest on public consent rather than military force. The reform drew a sharper institutional line between the police, tasked with everyday domestic order, and the military, reserved for external defense and extreme internal crises. The distinction is central to modern discussions of which uses of force by the state count as legitimate and in what context. politics / society ●●

29 September 1829 Founding of the Metropolitan Police 0 cit. Home Secretary Robert Peel establishes the Metropolitan Police, the first large modern police force in Britain, headquartered at Scotland Yard. Freemasonry was already well established among London's professional, civic, and merchant classes, and lodges drawing on police officers formed within a few decades of the force's creation. politics / society ●●

1829 Daniel O'Connell and Catholic Emancipation 0 cit. Daniel O'Connell built a mass movement of Catholic voters and won election to Parliament, forcing London to pass Catholic Emancipation in 1829. Catholics could now sit in Parliament and hold most public offices. O'Connell, called the Liberator, showed the power of peaceful mass politics, though his later campaign to repeal the Union failed. politics / religion ●●

1830 Founding of the Second French Colonial Empire 0 cit. The invasion of Algeria began France's second wave of colonial expansion. This empire eventually covered large parts of Africa and Southeast Asia. politics / war ●●●●

c. 1830 to c. 1870 The industrial working class and trade unions rise 0 cit. Factory work created a large wage-earning class with shared interests. Workers built trade unions to bargain over pay and conditions and to press for political reform. politics / society ●●●●

5 July 1830 French conquest of Algeria begins 0 cit. France captured Algiers and began a long, violent conquest of Algeria. It became a settler colony ruled as part of France, with land taken from Algerians for European colonists. politics / war ●●●●

28 May 1830 Indian Removal Act 0 cit. The United States Congress passed the Indian Removal Act, authorizing the federal government to negotiate the forced relocation of Indigenous nations from the southeastern United States to lands west of the Mississippi River. It provided the legal basis for removing the Cherokee, Choctaw, Creek, Chickasaw, and Seminole nations from their homelands. Thousands died during the forced marches that followed, most infamously the Cherokee Trail of Tears. politics ●●

c. 1830 Tammany Hall becomes the Democratic Party's city organization 0 cit. By the 1830s the Tammany Society's political wing, known as Tammany Hall after its meeting building, had become the organizing arm of the Democratic Party in New York City. It built loyalty among immigrant voters, especially the growing Irish population, by trading small favors, jobs, and naturalization help for votes. politics / society ●●

1830 The fragmentation of Gran Colombia 0 cit. Bolivar's union of Gran Colombia breaks apart into Venezuela, Ecuador, and New Granada amid regional rivalries and disputes over central power. A disillusioned Bolivar dies the same year, reportedly remarking that those who serve a revolution plow the sea. The breakup sets a pattern of fractured, quarreling states across the continent. politics ●●

1830 The Cultivation System 0 cit. Governor-General Van den Bosch forces Javanese peasants to grow cash crops such as coffee, sugar, and indigo for the state instead of food. The system produces enormous profits that flow to the Dutch treasury and help pay off its debts, while famine strikes parts of Java. It ties Dutch prosperity directly to forced colonial labor. economy / politics / society ●●●

c. 1830 The Iloikop wars 0 cit. Through the early and middle nineteenth century the Maa sections fought each other in a long series of conflicts known as the Iloikop or Kwavi wars. The pastoral sections, led by the Purko and Kisongo, clashed with rivals such as the Laikipiak and Uasin Gishu over grazing and cattle. By the 1870s the victors had broken and scattered the losing sections, leaving refugees absorbed into other peoples. politics / war ●●

1831 Mazzini founds Young Italy 0 cit. Giuseppe Mazzini founds Young Italy in exile to fight for a unified Italian republic. His model of conspiratorial national movements inspires nationalists across Europe. politics ●●●

1831 Dissolution of Gran Colombia 0 cit. By 1831 the union of Gran Colombia had broken apart into Venezuela, New Granada, and Ecuador. Regional rivalries and the death of Simon Bolivar ended his vision of a single large republic. politics ●●

1 January 1831 Garrison launches The Liberator 0 cit. William Lloyd Garrison began publishing The Liberator, demanding the immediate end of slavery in the United States. The paper energized a radical abolition movement that helped push the nation toward emancipation. culture / politics ●●

March 1831 The Reform Act debates popularize the idea of 'rotten boroughs' 0 cit. In the parliamentary debates leading to the 1832 Reform Act, campaigners popularize the term 'rotten borough' for parliamentary seats with tiny or nonexistent electorates that were effectively controlled by a single wealthy patron who could choose the MP. The debate over rotten boroughs is a documented early case of a electoral structure being used, quite openly, to concentrate parliamentary influence in a few hands. politics ●

1 July 1832 Founding of Jardine Matheson 0 cit. Scottish traders William Jardine and James Matheson found a trading house in Canton dealing in tea, cotton, and opium. The firm helps push Britain into the First Opium War and becomes a pillar of colonial Hong Kong commerce. economy / politics / war ●●●

10 July 1832 Andrew Jackson vetoes the Bank of the United States 0 cit. President Andrew Jackson vetoed the bill to recharter the Second Bank of the United States, calling it a monopoly that favored the wealthy. The veto opened a long political fight known as the Bank War. economy / politics ●●●●

7 June 1832 The Great Reform Act widens the vote 0 cit. The Reform Act redrew electoral boundaries and gave seats to growing industrial towns. It extended the vote to more middle-class men but left most workers without it. politics / society ●●●●

1832 Founding of Skull and Bones at Yale 0 cit. Skull and Bones was founded as a senior secret society at Yale University. Its small membership and secrecy, along with alumni who reached high office, made it a lasting subject of public fascination. politics / society ●●●

1832 Reform Act widens the British vote 0 cit. The Reform Act redrew constituencies and extended the vote to more property-owning men. It began a long process of expanding the franchise that turned Britain toward mass democracy. politics / society ●●●●

1832 Anti-Masonic Party runs first third-party presidential candidate 0 cit. The Anti-Masonic Party nominated William Wirt for president, becoming the first third party in American history to hold a national convention and run a presidential candidate. The party won about 8 percent of the popular vote and carried Vermont. This intense national suspicion of Freemasonry formed the cultural backdrop of Joseph Smith's youth in upstate New York, more than a decade before he himself became a Mason. politics / society ●

7 June 1832 The First Reform Act widens the vote and redraws seats 0 cit. The Reform Act abolishes many small, sparsely populated boroughs whose parliamentary seats had been controlled by a single wealthy patron and gives seats to growing industrial cities instead. It also expands the property-based franchise, though most working men and all women remain unable to vote. politics ●●●

3 March 1832 Worcester v. Georgia decided 0 cit. The U.S. Supreme Court ruled that the Cherokee Nation was a sovereign entity and that Georgia's state laws had no force within Cherokee territory. President Jackson refused to enforce the ruling, reportedly saying John Marshall had made his decision and could enforce it himself. The federal and Georgia governments proceeded with removal regardless. politics ●●

22 March 1833 Zollverein 0 cit. Treaties uniting most German states in a customs union under Prussian leadership, effective from January 1834. It knitted Germany together economically decades before political unification. diplomacy / economy / politics ●●●

8 July 1833 Treaty of Hunkar Iskelesi 0 cit. Russo-Ottoman defensive alliance whose secret article obliged the Ottomans to close the Dardanelles to foreign warships at Russia's request. It alarmed Britain and France and fed the Eastern Question. diplomacy / politics / war ●●

28 August 1833 Abolition of slavery in the British Empire 0 cit. The Slavery Abolition Act receives royal assent, freeing some 800,000 enslaved people in most of the British Empire. The act makes the world's leading power an abolitionist state and adds momentum to emancipation elsewhere. politics / society ●●●●

26 September 1833 Jackson removes federal deposits from the Bank 0 cit. The Jackson administration began moving federal deposits out of the Second Bank of the United States and into selected state banks. The move weakened the national bank ahead of its charter's expiration. economy / politics ●●●

28 August 1833 Britain's Slavery Abolition Act frees enslaved people 0 cit. Parliament abolished slavery across most of the British Empire, freeing about 800,000 people. Freedom came with an apprenticeship system and huge compensation paid to former enslavers, not to the enslaved. economy / politics ●●●

29 August 1833 The Factory Act of 1833 limits child labour 0 cit. The Factory Act restricted the hours of children in textile mills and created inspectors to enforce the law. It was an early move to curb the worst abuses of factory work. politics / society ●●●●

28 August 1833 Slavery abolished in the British Empire 0 cit. Parliament passed the Slavery Abolition Act, freeing most enslaved people in the empire from 1834 after a period of unpaid apprenticeship. The government paid huge compensation to slave owners, not to the formerly enslaved. politics / society ●●●●

28 August 1833 Britain abolishes slavery in its colonies 0 cit. The Slavery Abolition Act freed around 800,000 enslaved people across the British Empire, taking effect in 1834. Many were forced into several more years of unpaid apprenticeship before full freedom. politics / society ●●●●●

1833 France's Guizot Law expands primary schools 0 cit. The Guizot Law required every commune to run a primary school for boys, an early step toward mass schooling in France. It preceded the fully free and secular system by decades. politics / society ●●

28 August 1833 Slavery Abolition Act 0 cit. Parliament passed the Slavery Abolition Act, freeing enslaved people across most of the British Empire, with full emancipation phased in through an apprenticeship system by 1838. The Act compensated slave owners with 20 million pounds, a debt British taxpayers finished paying off only in 2015, while enslaved people received no compensation. Roughly 800,000 people were freed. politics / society ●●●

28 August 1833 Slavery abolished across the British Empire 0 cit. The Slavery Abolition Act ended slavery across most of the British Empire, freeing around 800,000 people. The law compensated slave owners, not the formerly enslaved, a fact now widely criticized. Many freed people were still bound for years under an apprenticeship system. politics / society ●●

14 August 1834 The New Poor Law is passed 0 cit. The Poor Law Amendment Act cut cash relief and pushed the poor into workhouses with harsh conditions. It aimed to reduce costs but caused widespread hardship and anger. politics / society ●●●

March 1834 The Tolpuddle Martyrs are transported 0 cit. Six farm laborers were sentenced to transportation to Australia for swearing a union oath. A public outcry secured their pardon and made them a landmark in union history. politics / society ●●●

1 January 1834 The Zollverein creates a German customs union 0 cit. The Zollverein removed tariffs between many German states and created a large single market. Free internal trade and shared standards helped German industry grow. economy / politics ●●●●

1 December 1834 Slavery abolished throughout the British Empire 0 cit. The British Slavery Abolition Act freed enslaved people across the empire, including at the Cape, though a mandatory four-year 'apprenticeship' period delayed full freedom until 1838. The measure angered many Boer farmers, who resented both the loss of unpaid labor and what they saw as inadequate compensation. Resentment over abolition, alongside British land and language policy, became a major grievance driving the Great Trek. politics / society ●●●

1834 Mexico secularizes the California missions 0 cit. The Mexican government secularized the California missions, stripping the Franciscans of control and dividing mission lands. The promise to return land to native people was largely broken, and much passed to private ranchers. Decades of mission life had already sharply reduced native populations through disease and forced labor, a case cited in later accounts of cultural erasure. economy / politics / religion ●

1835 Macaulay's Minute imposes English education on India 0 cit. Thomas Macaulay's Minute pushed the colonial government to fund English-language education to produce clerks for the Raj. It reshaped Indian schooling and left a lasting divide over language of instruction. culture / politics ●●●●

February 1835 Macaulay's Minute on Indian Education 0 cit. Thomas Babington Macaulay, a member of the Supreme Council of India, wrote his 'Minute on Indian Education,' arguing that colonial funds should go toward English-language, Western-style education rather than Sanskrit or Persian learning. His stated aim was to form 'a class of persons, Indian in blood and colour, but English in taste, in opinions, in morals, and in intellect' who could serve as interpreters between the British and the wider population. The policy shaped colonial education across British India for the rest of the century and is a foundational document in the study of colonial elite formation. culture / politics ●●

24 November 1835 Texas provisional government formally creates a ranger corps 0 cit. The provisional government of Texas, meeting during the lead-up to the Texas Revolution, authorized a corps of rangers to patrol the frontier between the Trinity and Guadalupe rivers. This is the date the Texas Rangers use as their official founding, though the force was small, unpaid in cash, and dissolved and reconstituted repeatedly over the following decades. It functioned less as a police agency than as an irregular militia. politics / war ●●

9 September 1835 England reforms borough government into municipal corporations 0 cit. The Municipal Corporations Act reorganized town government in England and Wales into elected municipal corporations, legal bodies that own property, hold debt, and act as a single person in law. Cities were literally incorporated, run through a corporate form borrowed from business. Modern local government still rests on this idea of the city as a corporation. politics / society ●●

1836 The Great Trek begins 0 cit. Thousands of Boer families, later called Voortrekkers, left the Cape Colony in ox-wagon convoys to escape British rule and seek independent farmland in the interior. They moved north and east into territory inhabited by Ndebele, Zulu, and other African communities, leading to violent conflict. The Trek became a founding narrative of Afrikaner nationalism in the following century. politics / society ●●●

1836 Washington Monument Obelisk Design Chosen 0 cit. The Washington National Monument Society held a nationwide competition for a monument to George Washington, and architect Robert Mills won with a design for a 600-foot obelisk ringed by a Greek colonnade. Funding problems later forced the Society to drop the colonnade and build only the plain obelisk. Mills was a documented architect working from classical and Egyptian precedent, and the final, simpler shape was a cost decision, not a hidden one. The obelisk was already a common choice for commemorative monuments in this period. culture / politics ●●

c. 1836 Creek (Muscogee) removal 0 cit. After the Second Creek War, federal troops and state militia forcibly marched most of the Muscogee (Creek) Nation from Alabama to Indian Territory in present-day Oklahoma. Many were transported in chains as prisoners of war rather than as treaty parties. Historians estimate several thousand Creek people died from disease, exposure, and starvation during the removal and its immediate aftermath. politics / war ●●

1836 The Irish Constabulary consolidated into a national armed police 0 cit. Building on county forces begun under Robert Peel in the 1820s, the Constabulary (Ireland) Act of 1836 merged them into a single centralized Irish Constabulary. Unlike the unarmed London police Peel had also founded, this force was armed, barracked, and drilled like soldiers, and it answered to Dublin Castle rather than to local towns. It became the working model of a colonial paramilitary police for controlling a population Britain governed as subjects. politics / society ●●●

c. 1837 Britain compensates slave owners 0 cit. After abolition Britain paid 20 million pounds to slave owners for the loss of their human property, and nothing to the freed. The enslaved received no compensation and were bound to years of unpaid apprenticeship. economy / politics ●●●

1837 Horace Mann leads the common school movement 0 cit. As the first secretary of the Massachusetts Board of Education from 1837, Horace Mann pushed for free public common schools open to all children. His work helped build the American public school system. politics / society ●●●●

1837 Horace Mann launches the American common school 0 cit. As head of the Massachusetts board of education, Horace Mann championed free public common schools open to all children. The movement spread across the states and defined US public education. politics / society ●●●●

1837 Republic of Texas re-authorizes ranger companies 0 cit. The Republic of Texas Congress funded ranger companies to defend the frontier against Comanche and Kiowa raids following independence. Funding was chronically short and companies were repeatedly disbanded and re-formed through the Republic period, a pattern that continued after annexation. The Rangers of this era were essentially part-time militia, not a standing police force. politics / war ●

8 May 1838 Chartism launches the People's Charter 0 cit. The People's Charter set out six demands, including votes for all men and secret ballots. Chartism became a mass movement of working people pressing for political rights. politics / society ●●●●

1838 The Chartist movement demands universal male suffrage 0 cit. The Chartists, a working-class movement, publish the People's Charter demanding votes for all men, secret ballots, and equal electoral districts. Most of their demands are rejected at the time but are eventually adopted over the following century, making Chartism a documented forerunner of full suffrage reform in Britain. politics / society ●●

c. September 1838 Cherokee Trail of Tears 0 cit. After the May 1838 removal deadline passed, U.S. Army troops under General Winfield Scott rounded up Cherokee families into stockades and forced roughly 16,000 people on a march west to Indian Territory, continuing into the spring of 1839. The Cherokee National Council later estimated that about 4,000 people died along the route and in the holding camps from disease, cold, and hunger; other scholarly estimates range somewhat lower. The route and removal became known as the Trail of Tears. politics / war ●●●

c. 1838 Australia's frontier wars and the Stolen Generations 0 cit. As British settlers spread across Australia from 1788, frontier violence, massacres such as Myall Creek in 1838, and introduced disease drove a steep collapse in the Aboriginal population. From the early twentieth century, protection laws let the state remove mixed-descent Aboriginal children from their families, the policy later known as the Stolen Generations. Settlers became the overwhelming majority, and Aboriginal people were governed as a controlled minority rather than a nation to be decolonized. politics / society / war ●●●

17 April 1839 Founding of the British and Foreign Anti-Slavery Society 0 cit. Abolitionists led by Joseph Sturge found a society in London to end slavery worldwide after its abolition in the British Empire. As Anti-Slavery International, it is the world's oldest human rights organization. diplomacy / politics / society ●●

3 November 1839 Tanzimat reforms begin 0 cit. The Gülhane edict opens a decades-long push to modernize the empire: equal legal standing for all subjects regardless of religion, a reformed tax and conscription system, secular schools, and new law codes. The Tanzimat tried to hold the empire together by making it more centralized and modern. Results were mixed, and conservative resistance ran deep. economy / politics / society ●●

June 1839 Lin Zexu destroys the opium stocks at Humen 0 cit. The Qing commissioner Lin Zexu confiscates and destroys more than a thousand tons of British opium at Humen. His crackdown was a direct challenge to the trade and gave Britain the pretext for war. economy / politics ●●

6 February 1840 Treaty of Waitangi 0 cit. Agreement between the British Crown and Maori chiefs that made New Zealand a British colony while promising Maori possession of their lands. Differences between the English and Maori texts remain central to New Zealand law and politics. diplomacy / politics / society ●●●

1840 Publication of What Is Property? 0 cit. Pierre-Joseph Proudhon publishes What Is Property?, answering that property is theft and calling himself an anarchist. It is the first major work of anarchist theory. politics ●●●

1840 The Damascus Affair 0 cit. A blood libel accusation against Jews in Damascus in 1840 drew international attention and intervention. It spurred early Jewish political organizing in Western Europe. politics / religion ●●

6 February 1840 Treaty of Waitangi signed 0 cit. British officials and around 500 Maori chiefs signed the Treaty of Waitangi, establishing British sovereignty over New Zealand while promising Maori continued possession of their lands. The English and Maori versions of the text differed on key points, and later governments broke the treaty's land guarantees repeatedly. It remains New Zealand's founding constitutional document and a continuing source of legal claims. diplomacy / politics ●●

c. 1840 Jonker Afrikaner founds Windhoek as an Oorlam base 0 cit. Oorlam Nama leader Jonker Afrikaner settled at the warm springs known as Aigams and built it into his capital, renaming it Windhoek. From there he extended Oorlam Nama control over much of central Namibia and fought repeated wars with Herero groups over cattle and grazing land. Windhoek later became the capital of German South-West Africa and remains Namibia's capital today. politics ●●

6 February 1840 Treaty of Waitangi signed in New Zealand 0 cit. British Crown representatives and around 500 Maori chiefs signed the Treaty of Waitangi, establishing British sovereignty over New Zealand while nominally guaranteeing Maori rights to their lands. Discrepancies between the English and Maori-language versions of the treaty later fueled land confiscations and conflict. The treaty remains the founding legal document of modern New Zealand and a continuing source of Maori land claims. diplomacy / politics ●●

1840 Zanzibari rule over the coastal strip 0 cit. Sultan Seyyid Said of Oman moved his capital to Zanzibar in 1840, building a commercial empire on cloves, ivory, and the East African slave trade that ran through coastal Kenya. The Sultan of Zanzibar claimed a ten-mile-deep coastal strip from Lamu to the south, a claim that outlasted the caravan trade and shaped Kenya's borders. Britain would later lease and then absorb this strip as it built its protectorate. economy / politics ●●

c. 1840 Zanzibar's sultans claim the coastal strip 5 cit. Sultan Seyyid Said of the Busaidi dynasty moved his capital from Muscat to Zanzibar in 1840, making the island the commercial and political heart of the coast. From there the sultanate claimed a strip of the mainland, including the Kenyan ports, and grew rich on cloves, ivory, and the trade in enslaved people. This claim later became the legal basis on which European powers negotiated the coast during the colonial partition. diplomacy / economy / politics ●●

1840 Seyyid Said moves the Omani capital to Zanzibar 0 cit. The Omani ruler Seyyid Said shifted his seat from Muscat to Zanzibar and built a plantation economy around cloves. Indian merchant houses advanced the credit that financed the plantations, the customs and the long-distance trade. Their capital made them indispensable to the island's rulers. economy / politics ●●

1840 Seyyid Said Moves His Capital to Zanzibar 0 cit. Sultan Seyyid Said of Oman moved his court from Muscat to Zanzibar in 1840, making the island the centre of an Indian Ocean empire. It was built on cloves, ivory, and slaves. economy / politics ●●

c. 1840 Palmerston and gunboat diplomacy 0 cit. As foreign secretary and later prime minister, Lord Palmerston used the threat and use of naval force to open markets and protect British interests and subjects abroad. The practice of sending warships to coerce weaker states became known as gunboat diplomacy. Historians describe this as free-trade imperialism: prying markets open by force while preaching open commerce. diplomacy / economy / politics ●●●

6 February 1840 New Zealand's Treaty of Waitangi and the land wars 0 cit. The Treaty of Waitangi in 1840 was signed between the British Crown and many Maori chiefs, but its Maori and English texts differed sharply over who held sovereignty. Disputes over land led to the New Zealand Wars of the 1840s to 1870s and large confiscations of Maori territory. British settlers became the majority, though the treaty later gave Maori a legal footing to press claims that survives today. diplomacy / politics / war ●●

1841 Collapse of the Second Bank of the United States 0 cit. After President Andrew Jackson vetoed its recharter in 1832 and withdrew federal deposits, the bank lost its federal charter in 1836 and continued as a Pennsylvania bank. It fails in 1841, ending America's early experiments with central banking. economy / politics ●●●

9 March 1841 United States v The Amistad 0 cit. The US Supreme Court ruled that the Africans of the Amistad had been illegally enslaved and were free. The survivors were allowed to return to Sierra Leone. politics / society ●●●

29 August 1842 Treaty of Nanking 0 cit. Treaty ending the First Opium War, ceding Hong Kong to Britain, opening five ports, and imposing an indemnity on China. It was the first of the unequal treaties that defined China's century of humiliation. diplomacy / economy / politics / war ●●●●

1842 Treaty of Nanjing and the century of humiliation 0 cit. The 1842 Treaty of Nanjing ceded Hong Kong to Britain, opened treaty ports, and imposed indemnities. It was the first of the unequal treaties that Chinese later called the century of humiliation. politics ●●●●●

1842 Scotland Yard's Detective Branch founded 0 cit. The Metropolitan Police created a small Detective Branch of plainclothes officers to investigate crimes that uniformed patrol could not prevent, a break from the force's original prevention-only mandate. The branch later became the Criminal Investigation Department, or CID, in 1878 after a corruption scandal involving detectives taking bribes from swindlers. Scotland Yard became synonymous worldwide with criminal detection. politics ●●

c. 1842 The century of humiliation 0 cit. Chinese nationalists later named the era opened by the Opium Wars the century of humiliation, running from the unequal treaties to 1949. The memory of foreign powers forcing a drug and carving out concessions became a central story in modern Chinese politics and remains one today. politics / society ●●

28 March 1844 The Guardia Civil founded in Spain 0 cit. Spain established the Guardia Civil by decree in 1844 as a militarized national force to police the countryside and roads, which had been plagued by banditry and unrest. Organized on military lines and housed in barracks called casas cuartel, its members lived apart from the communities they policed. The Guardia Civil became a lasting symbol of centralized armed order in Spain and a model cited across the Spanish-speaking world. politics / society ●●

1844 First steps toward abolishing Roma slavery 0 cit. Pressure from a reform-minded generation led the principalities to begin freeing Roma slaves in stages during the 1840s, starting with those owned by the state and the church. Writers and activists cast Roma slavery as a national shame that had to end. These partial measures set the ground for full abolition a decade later. economy / politics / society ●●

c. 1845 Manifest Destiny enters the national language 0 cit. Journalist John O'Sullivan wrote that it was the nation's manifest destiny to spread across the continent. The phrase gave a moral frame to westward expansion and conquest. culture / politics ●●●

1845 Engels publishes The Condition of the Working Class in England 0 cit. Friedrich Engels described the poverty, overcrowding, and disease he saw among workers in Manchester and other cities. The book became an influential indictment of industrial capitalism. politics / society ●●●●

May 1845 New York City establishes a full-time police department 0 cit. The New York Municipal Police was created, replacing the old night watch with a full-time, salaried, uniformed force modeled partly on London's Metropolitan Police. It was one of the first modern police departments in the United States, and other major American cities including Boston and Philadelphia soon followed with similar reforms. Political patronage and corruption plagued the department almost from the start, with officers frequently owing their jobs to Tammany Hall. politics ●●

15 June 1846 Oregon Treaty 0 cit. Treaty between Britain and the United States dividing the Oregon Country along the 49th parallel. It settled the last major boundary dispute between the two powers in North America. diplomacy / politics ●●●

25 June 1846 Repeal of the Corn Laws 0 cit. Britain repeals the tariffs protecting domestic grain, splitting the Conservative Party under Robert Peel. The repeal marks the triumph of free-trade liberalism as British policy. economy / politics ●●●●

8 June 1847 The Ten Hours Act limits the working day 0 cit. The Factory Act of 1847 capped the working day for women and young people in textile mills at ten hours. It was a major win for the movement to shorten hours. politics / society ●●●

2 February 1848 Treaty of Guadalupe Hidalgo 0 cit. Peace ending the Mexican-American War, with Mexico ceding roughly half its territory including California and the Southwest to the United States for 15 million dollars. It fixed the Rio Grande as the Texas border. diplomacy / politics / war ●●●●

c. 1848 to c. 1849 Revolutions of 1848 1 cit. Uprisings demanding constitutions, national unity, and social reform sweep across Europe from Paris to Vienna and Berlin. Most are crushed, but the ideas of liberalism, nationalism, and socialism they spread shape the next century. politics / society ●●●●

21 February 1848 Publication of the Communist Manifesto 0 cit. Marx and Engels publish the manifesto of the Communist League, setting out a theory of history driven by class struggle. It becomes the founding text of the communist movement. economy / politics ●●●●●

February 1848 to 1849 Springtime of Nations 0 cit. Revolutions sweep France, the German and Italian states, and the Habsburg Empire, demanding constitutions and national self-rule. Though nearly all are crushed, liberalism and nationalism emerge as the driving forces of European politics. politics ●●●●

19 July 1848 Seneca Falls Convention 0 cit. The first women's rights convention adopts the Declaration of Sentiments, modeled on the Declaration of Independence and demanding the vote. It launches the organized women's movement in the United States. politics / society ●●●●

2 February 1848 Treaty of Guadalupe Hidalgo ends the Mexican-American War 0 cit. The treaty ended the war with Mexico and transferred vast territory in the West and Southwest to the United States. The gains nearly completed the continental expansion of the country. politics / war ●●●

19 July 1848 Seneca Falls Convention launches U.S. women's movement 0 cit. The first women's rights convention in the United States issued a declaration demanding equality, including the right to vote. It marked the start of an organized American feminist movement. politics / society ●●●

27 April 1848 France ends slavery for good 0 cit. The Second Republic abolished slavery in all French colonies, this time permanently. It freed around a quarter of a million people, mainly in the Caribbean and Indian Ocean. politics / society ●●●