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19th Century

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1814

Culture 19th Century North America

Francis Scott Key Pens Star-Spangled Banner

During the War of 1812, British forces attacked Baltimore in September 1814 as part of their campaign against the young United States. American lawyer Francis Scott Key had boarded a British truce ship to negotiate the release of a prisoner and was detained overnight aboard the vessel while the Royal Navy bombarded Fort McHenry. On the night of September 13–14, he witnessed the fort withstand a fierce barrage of shells and rockets. At dawn on September 14, Key saw the American flag still flying over the fort, inspiring him to write a poem titled “Defence of Fort M’Henry” on the back of an envelope. The verses, later set to music, became the U.S. national anthem in 1931.

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1814

Politics 19th Century Europe

Treaty of Ghent Signed Ending War of 1812

By late 1814, the War of 1812 between the United States and Britain had dragged on amid shifting European alliances after Napoleon's defeat. American and British negotiators had been meeting in Ghent in the United Netherlands since August. On December 24, 1814, they signed the Treaty of Peace and Amity, restoring pre-war boundaries and returning captured territories without resolving impressment or trade issues. News of the signing reached North America weeks later, after key battles like New Orleans. The treaty was ratified unanimously by the U.S. Senate in February 1815.

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1815

Military 19th Century North America

U.S. Forces Win Battle of New Orleans in War of 1812

The War of 1812 between the United States and Great Britain had dragged on for over two years, with British forces attempting to control key American ports and territories. On January 8, 1815, British troops under Major General Sir Edward Pakenham launched a major assault on American defensive lines near New Orleans, Louisiana. Major General Andrew Jackson commanded a diverse force of regulars, militia, sailors, and volunteers who had fortified positions along the Rodriguez Canal. The British attack faltered under withering American artillery and rifle fire, resulting in heavy British casualties including the death of Pakenham. News of the victory boosted American morale even though the Treaty of Ghent ending the war had already been signed weeks earlier.

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1815

Military 19th Century Europe

Napoleon Escapes Exile on Elba Island

Following his abdication in 1814 after the War of the Sixth Coalition, Napoleon Bonaparte had been exiled to the island of Elba off the coast of Italy under the terms of the Treaty of Fontainebleau. European powers, including Britain, Austria, Prussia, and Russia, monitored the situation amid the Congress of Vienna's redrawing of the continent. Napoleon grew restless on the small island, where he governed a modest domain but received news of political discontent in France under the restored Bourbon king Louis XVIII. On the evening of February 26, 1815, he boarded the brig Inconstant with about 1,000 loyal troops and a small flotilla, evading British naval patrols. He landed near Golfe-Juan in southern France on March 1 and began...

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1815

Military 19th Century Europe

Napoleon Lands in France from Elba

Exiled to the island of Elba after his 1814 abdication, Napoleon Bonaparte escaped with about 1,000 loyal troops aboard the brig Inconstant. He landed at Golfe-Juan on the southern French coast on March 1, 1815, issuing a proclamation asserting his return to power. Avoiding royalist strongholds in Provence, he marched northward through the Alps, where troops sent to stop him instead joined his cause. This began the period known as the Hundred Days, ending the Bourbon restoration temporarily. By March 20 he reached Paris and resumed control.

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1815

Politics 19th Century Europe

Napoleon Enters Paris to Begin Hundred Days

Following his abdication in 1814 and exile to Elba, Napoleon Bonaparte escaped in late February 1815 with a small force and landed near Cannes on March 1. As he marched north, French troops sent to oppose him defected en masse, swelling his ranks dramatically. King Louis XVIII fled the capital on March 13. On March 20, Napoleon arrived in Paris amid jubilant crowds and reclaimed power, launching the period known as the Hundred Days. He immediately began reorganizing the government and army while promising constitutional reforms to broaden support. European powers, already gathered at the Congress of Vienna, swiftly formed a new coalition against him.

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1815

Disaster 19th Century Southeast Asia

Mount Tambora Erupts in Largest Recorded Volcanic Blast

In the early 19th century, Mount Tambora on Sumbawa island in the Dutch East Indies had been dormant for centuries before showing signs of activity in 1812 with rumbles and a dark cloud. On April 5, 1815, a major eruption began, with explosions heard hundreds of kilometers away, initially mistaken for cannon fire. The climax occurred on the evening of April 10 when three eruption plumes merged, turning the mountain into flowing liquid fire that sent pumice and ash raining down, followed by pyroclastic flows and tsunamis. The village of Tambora was completely destroyed, and the eruption ejected massive amounts of material into the stratosphere. Immediate effects included thousands of direct deaths from the flows and tsunamis across the region.

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1815

Military 19th Century Europe

Napoleon Defeated at Battle of Waterloo

After escaping exile on Elba, Napoleon Bonaparte rapidly rebuilt his army and launched the Hundred Days campaign to reclaim power in France. He faced a Seventh Coalition of European powers determined to prevent his resurgence. On June 18, 1815, near Waterloo in present-day Belgium, Napoleon's 72,000 French troops confronted approximately 68,000 Allied soldiers under the Duke of Wellington, reinforced later by 45,000 Prussians commanded by Gebhard Leberecht von Blücher. Intense fighting throughout the day saw repeated French assaults repelled, with key strongpoints like Hougoumont and La Haye Sainte changing hands. The timely arrival of Prussian forces on the French flank turned the tide, leading to a rout as the Imperial Guard's final attack failed.

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1815

Politics 19th Century Europe

Napoleon Begins Permanent Exile on St. Helena

After defeat at Waterloo and a second abdication, Napoleon surrendered to British forces in July 1815. The British government chose remote Saint Helena in the South Atlantic to prevent further escapes or influence. On October 15, 1815, HMS Northumberland anchored off the island, and Napoleon disembarked the next day with a small entourage including generals Bertrand and Montholon. He initially stayed at The Briars before moving to Longwood House. The exile isolated him from European politics until his death in 1821.

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1816

Politics 19th Century Latin America & Caribbean

Argentina Declares Independence from Spain

By 1816, the Napoleonic Wars had disrupted Spanish authority across its American colonies, creating opportunities for local autonomy. In the former Viceroyalty of the Río de la Plata, revolutionary leaders had governed in the name of the absent King Ferdinand VII since the 1810 May Revolution in Buenos Aires. When Ferdinand's restoration proved ineffective, delegates from the United Provinces gathered in San Miguel de Tucumán for the Congress of Tucumán to debate full sovereignty. After extended sessions, on July 9, 1816, the assembly voted to declare the provinces free and independent from Spain and any other foreign power. The formal Act of Independence was signed that day, naming the new entity the United Provinces of the Río de la Plata.

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1816

Politics 19th Century North America

Indiana Admitted as 19th U.S. State

Following the War of 1812, American settlers pushed westward into the Indiana Territory, which had been organized in 1800. Population growth and petitions for self-governance led Congress to consider statehood. On December 11, 1816, President James Madison signed the congressional resolution admitting Indiana to the Union as the 19th state. The new state's constitution reflected democratic principles of the era, including provisions for public education. This admission strengthened the young nation's expansion and balance between free and slave states in Congress.

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1817

Economics 19th Century North America

New York Stock and Exchange Board Constitution Adopted

By the early nineteenth century, New York had emerged as a growing commercial hub in the young United States, with securities trading conducted informally under the 1792 Buttonwood Agreement among twenty-four brokers. On March 8, 1817, these brokers formally adopted a constitution that reorganized their group into the New York Stock and Exchange Board, establishing rules to curb manipulative trading and creating governance structures modeled partly on Philadelphia’s exchange. The new organization rented dedicated space for trading, moving away from coffeehouses, and set minimum commission rates along with procedures for settling transactions. This step professionalized the market at a time when the United States was recovering from the War of 1812 and expanding westward trade. The immediate result was greater...

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1818

Politics 19th Century Latin America & Caribbean

Chile Formally Declares Independence from Spain

After years of struggle against Spanish colonial rule, including the decisive Argentine-Chilean victory at the Battle of Chacabuco in 1817 under José de San Martín and Bernardo O'Higgins, patriot forces consolidated control in central Chile. The declaration document had been drafted earlier, but on February 12, 1818—the first anniversary of Chacabuco—O'Higgins formally approved and proclaimed Chile's independence in a public ceremony in Santiago. The Act of Independence asserted Chile's sovereignty and rejected Spanish authority following the disruptions of the Napoleonic Wars in Europe. Festivities included cannon salutes, speeches, and public oaths of allegiance to the new republic. Although royalist forces remained active in the south until 1826, this date symbolized the birth of the independent Chilean state.

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1818

Politics 19th Century North America

Illinois Joins the Union as 21st State

In the years following the War of 1812, American settlers pushed westward into the Illinois Territory, drawn by fertile lands along the Mississippi and Illinois rivers despite challenges from prairie soils and Native American presence. The territorial population reached around 35,000 by 1818, meeting the threshold for statehood under the Northwest Ordinance framework. On December 3, 1818, President James Monroe signed the congressional resolution admitting Illinois as the 21st state of the United States. The new state's constitution established a free-state framework while allowing existing indentured servitude arrangements. This admission balanced sectional interests in Congress amid debates over slavery's expansion. Immediate governance shifted from territorial to state officials, enabling local control over land sales and infrastructure.

Event Detail America 250 Atlas

1819

Exploration 19th Century Southeast Asia

Treaty Establishes British Trading Post in Singapore

By the early 19th century, European powers competed intensely for control of Southeast Asian trade routes amid the decline of local sultanates and Dutch dominance in the region. Sir Stamford Raffles, acting for the British East India Company, sought a strategic post east of the Straits of Malacca to counter Dutch influence and secure British commerce with China and India. After arriving in late January 1819 and negotiating with local leaders including the Temenggong and Sultan Hussein of Johor, Raffles secured an agreement on February 6, 1819. The treaty granted the East India Company rights to establish a trading post on the island in exchange for annual payments to the rulers and recognized British protection. The Union Jack was raised...

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1819

Law 19th Century North America

Adams-Onís Treaty Cedes Florida to United States

Following the Louisiana Purchase and amid ongoing border disputes with Spain, U.S. Secretary of State John Quincy Adams negotiated with Spanish minister Luis de Onís over territorial claims in the Southeast and Southwest. On February 22, 1819, they signed the treaty in Washington, D.C., whereby Spain ceded East and West Florida to the United States in exchange for $5 million to settle American claims and a defined western boundary for the Louisiana Territory. This agreement resolved long-standing encroachments and pirate issues in the Floridas while clarifying the transcontinental boundary up to the Pacific Northwest. Ratification followed in 1821 after delays in Madrid. The treaty effectively doubled U.S. territory in the Southeast and set the stage for further expansion.

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1819

Civil Rights 19th Century Europe

Peterloo Massacre in Manchester

In the aftermath of the Napoleonic Wars, economic hardship and demands for parliamentary reform fueled large public meetings across Britain. On August 16, 1819, approximately 60,000 people gathered peacefully at St. Peter's Field in Manchester to hear radical orator Henry Hunt advocate for expanded suffrage and relief from the Corn Laws. Local magistrates, fearing unrest, ordered the Manchester and Salford Yeomanry and regular cavalry to arrest the speakers and disperse the crowd. The charge resulted in at least 15 deaths and hundreds of injuries, including many women and children. The event, dubbed the Peterloo Massacre in ironic reference to Waterloo, sparked widespread outrage and calls for reform.

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1820

Politics 19th Century Europe

King George III Dies at Windsor Castle

By the early nineteenth century, Britain had weathered the American Revolution and the Napoleonic Wars under a monarch whose later years were marked by recurring mental illness. King George III had withdrawn from public duties around 1810, with his son serving as regent. On January 29, 1820, the eighty-one-year-old king died at Windsor Castle after a decade of incapacity. His passing concluded a reign that began in 1760 and spanned profound imperial changes, including the loss of the American colonies. The event prompted an orderly succession as the Prince Regent ascended as George IV.

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1820

Politics 19th Century North America

Monroe Signs Missouri Compromise into Law

In the early 19th century, the United States faced growing tensions over the expansion of slavery as new territories sought statehood. Missouri's application to join the Union as a slave state threatened the delicate balance between free and slave states in Congress. After intense debates in both houses, Speaker Henry Clay engineered a series of measures that paired Missouri's admission with that of Maine as a free state. On March 6, 1820, President James Monroe signed the legislation. The compromise also prohibited slavery in most of the remaining Louisiana Purchase territory north of the 36°30′ parallel. This temporary resolution postponed deeper conflict over slavery's future.

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1820

Politics 19th Century North America

Maine Admitted as 23rd U.S. State

The District of Maine had long sought separation from Massachusetts due to geographic distance, economic differences, and political grievances that intensified after the War of 1812. As part of the Missouri Compromise crafted to balance free and slave states in Congress, Maine's admission as a free state was paired with Missouri's entry as a slave state. On March 15, 1820, President James Monroe signed legislation admitting Maine to the Union as the 23rd state. The move preserved the Senate's sectional balance at 12 free and 12 slave states temporarily. Maine's statehood reflected broader debates over slavery's expansion in the growing nation.

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1821

Military 19th Century Latin America & Caribbean

Battle of Carabobo Secures Venezuelan Independence

After a decade of intermittent warfare against Spanish royalist forces, South American patriots under Simón Bolívar sought a decisive blow in Venezuela. On June 24, 1821, Bolívar's army of about 6,500, including British and Irish volunteers, confronted roughly 5,000 royalists led by Miguel de la Torre near Carabobo. Patriot cavalry under José Antonio Páez routed the Spanish right flank while the center collapsed under coordinated attack. The victory ended major Spanish control over Venezuela and opened the path to the Republic of Gran Colombia. Royalist remnants retreated to coastal strongholds.

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1821

Politics 19th Century Latin America & Caribbean

Peru Declares Independence from Spain

After years of colonial rule and amid the broader wave of Latin American independence movements, Argentine general José de San Martín led patriot forces into Lima following the capture of key coastal positions. On July 28, 1821, in the Plaza Mayor, San Martín formally proclaimed Peru's independence from Spanish dominion in a ceremony attended by local leaders and citizens. The declaration asserted that Peru was free by the general will of the people, though full military victory over remaining Spanish forces would not come until 1824 at the Battle of Ayacucho. San Martín assumed the title of Protector of Peru, establishing the foundations for the new republic amid ongoing regional conflicts.

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1821

Politics 19th Century North America

Missouri Joins the United States as 24th State

The Louisiana Purchase had opened vast western lands, and Missouri Territory residents petitioned for statehood in 1817. Debates over slavery's expansion led to the Missouri Compromise of 1820, admitting Missouri as a slave state while banning slavery north of the 36°30′ parallel in remaining territories and pairing it with Maine's admission as a free state. After the compromise passed, Missouri drafted a constitution and awaited final approval. On August 10, 1821, President James Monroe proclaimed Missouri the 24th state. The admission balanced sectional interests temporarily but highlighted deepening divisions over slavery that would erupt decades later.

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1821

Politics 19th Century Latin America & Caribbean

Treaty of Córdoba Grants Mexican Independence

After eleven years of fighting in the Mexican War of Independence, royalist and insurgent forces reached a political settlement. Agustín de Iturbide, leader of the Army of the Three Guarantees, negotiated with incoming Spanish Viceroy Juan O'Donojú in Córdoba, Veracruz. On August 24, 1821, they signed the Treaty of Córdoba, which recognized Mexico as an independent constitutional monarchy under the Plan of Iguala. The agreement provided for a Mexican empire, religious unity, and social equality among classes. Although Spain later repudiated the treaty, it effectively ended Spanish rule on the ground.

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