Tecumseh (March 1768 – October 5, 1813) was a Native American leader of the Shawnee and a large tribal confederacy (known as Tecumseh's Confederacy), which opposes the United States during Tecumseh's War and the War of 1812.

Tecumseh grows up in the Ohio Country during the American Revolutionary War and the Northwest Indian War, where he is constantly exposed to warfare.

With Americans continuing to encroach on Indian territory after the British cede the Ohio Valley to the new United States in 1783, the Shawnee move farther northwest.

In 1808, they settle Prophetstown in present-day Indiana.

With a vision of establishing an independent American Indian nation east of the Mississippi, Tecumseh works to recruit additional tribes to the confederacy from the southern United States.

During the War of 1812, Tecumseh's confederacy allies with the British in The Canadas (the collective name for the colonies of Upper Canada and Lower Canada), and helps in the capture of Fort Detroit.

Tecumseh is killed in the Battle of the Thames, in October 1813.