What caused the end of the British-American Indian alliance in the War of 1812? the American Indian defeat at the Battle of Tippecanoe
Tecumseh’s absence at the Battle of Tippecanoe
the Creek defeat by Andrew Jackson
the death of Tecumseh in the Battle of the Thames

The Answer is D: "the death of Tecumseh in the Battle of the Thames"

Explanation:

Historical evidence points to the British needing Native support to protect Canada, while the Native Americans needed Britain to furnish weapons and food. The alliance worked well during the French and Indian War and the Revolutionary War, but crumbled with the Treaty of Ghent and the end of the War of 1812.