Tenskwatawa in the context of "Battle of Tippecanoe"

Tecumseh's confederacy was a confederation of Indigenous people in the Great Lakes region of North America which formed during the early 19th century around the teaching of Shawnee leader Tenskwatawa. The confederation grew over several years and came to include several thousand Native American warriors. Shawnee leader Tecumseh, the brother of Tenskwatawa, became the leader of the confederation as early as 1808. Together, they worked to unite the various tribes against colonizers from the United States who had been crossing the Appalachian Mountains and occupying their traditional homelands.

In November 1811, a US Army force under the leadership of William Henry Harrison engaged Native American warriors associated with Tenskwatawa in the Battle of Tippecanoe, defeating them and engaging in several acts of destruction. In retaliation for that battle, Tecumseh led the confederation, allied with the British Empire, to war with the United States during a conflict later named Tecumseh's War, part of the War of 1812. However, the confederation fractured in 1813 following his death at the Battle of the Thames.

The Northwestern Confederacy, or Northwestern Indian Confederacy, was a loose confederacy of Native Americans in the Great Lakes region of the United States created after the American Revolutionary War. Formally, the confederacy referred to itself as the United Indian Nations, at their Confederate Council. It was known infrequently as the Miami Confederacy since many contemporaneous federal officials overestimated the influence and numerical strength of the Miami tribes based on the size of their principal city, Kekionga.

The confederacy, which had its roots in pan-tribal movements dating to the 1740s, formed in an attempt to resist the expansion of the United States and the encroachment of American settlers into the Northwest Territory after Great Britain ceded the region to the U.S. in the 1783 Treaty of Paris. American expansion resulted in the Northwest Indian War (1785–1795), in which the Confederacy won significant victories over the United States, but concluded with a U.S. victory at the Battle of Fallen Timbers. The Confederacy became fractured and agreed to peace with the United States, but the pan-tribal resistance was later rekindled by Tenskwatawa (known as the Prophet) and his brother, Tecumseh, resulting in the formation of Tecumseh's confederacy.