British soldiers burn Buffalo, New York.

The War of 1812 was fought between the United States and United Kingdom from 1812 to 1815, largely as a result of ongoing tensions left unresolved after the American Revolution. The United States objected strongly to British interference with American trade during the Napoleonic Wars and the impressment of American sailors into the British navy. Many Americans also believed Britain was encouraging Native American resistance on the western frontier, fueling calls for war from expansion-minded politicians known as War Hawks. These combined pressures pushed President James Madison to ask Congress for a declaration of war in June 1812.

Early in the conflict, American leaders assumed that invading British-controlled Canada would be relatively easy, but these campaigns largely failed due to poor planning and strong resistance. The war at sea, however, proved more successful for the United States. American frigates such as the USS Constitution won several high-profile victories that boosted national morale, even though the British navy maintained overall dominance. Fighting also spread across the Great Lakes region, where control of waterways became strategically crucial for both sides.

In 1814, after defeating Napoleon in Europe, Britain redirected more military resources to North America. This shift led to some of the war’s most dramatic moments, including the British capture and burning of Washington, D.C., where the Capitol and White House were set ablaze. Despite this setback, American forces managed to defend key positions, most notably at Baltimore. The failed British assault there inspired Francis Scott Key to write “The Star-Spangled Banner,” which later became the U.S. national anthem.

The war officially ended with the Treaty of Ghent in December 1814, which restored borders to their prewar status and settled none of the original disputes. Ironically, one of the most famous battles—the Battle of New Orleans—was fought after the treaty was signed, due to slow transatlantic communication. While the War of 1812 ended in a military stalemate, it had lasting consequences. It strengthened American nationalism, confirmed U.S. independence from Britain in practice, and marked the decline of Native American resistance east of the Mississippi River, reshaping the future of North America.