When Tecumseh returned from the south and heard what had happened, his fury at his brother’s decision was profound.

He understood immediately what had been lost.

But he also understood that the time for waiting was over: the War of 1812, which was clearly coming, would force the decision that Tippecanoe had precipitated prematurely.

The War Of 1812: The Context That Changed Everything

The declaration of war between the United States and Great Britain in June 1812 transformed the political landscape in which Tecumseh’s confederacy was operating.

The causes of the War of 1812 were complex: British interference with American shipping during the Napoleonic Wars, the impressment of American sailors into the Royal Navy, lingering grievances from the Revolutionary War, American desires to acquire British Canada, and — prominently, in the arguments of the American “War Hawks” in Congress — the British support for Native resistance in the Northwest.