What nations did the Indian Tecumseh lead?

Tecumseh was a prominent Native American leader of the Shawnee tribe who sought to unite various Native American nations against the encroachment of European settlers. He played a significant role in rallying tribes from the Great Lakes region, including the Shawnee, Delaware, Wyandot, and others, to create a confederation aimed at resisting American expansion. His efforts were most notable during the early 19th century, particularly leading up to and during the War of 1812.