Why was the Battle of Tippecanoe started?

Shawnee chief Tecumseh went to visit three Indian tribes to enlist their support against American expansion. Tecumseh left his brother, the Shawnee Prophet, in charge and told him not to attack nearby American forces. The Shawnee Prophet ignored his brother's warnings and attacked the Americans anyway, near Tippecanoe Creek. The American forces, under Indiana Territorial Governor William Henry Harrison, fought back. They burned Prophet's Town, the Shawnee's chief village. The battle wasn't really a victory for either side, but it made Harrison a hero.

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