USA HISTORY

Detailed explanation-1: -At the time the war broke out, the young American nation had been aggressively expanding westward, putting Indigenous peoples and their ancestral homelands under relentless attack. Seeking military allies to help protect their territory, most Native Americans chose to fight on the side of the British.

Detailed explanation-2: -During the American Revolution, the majority of American Indian Nations allied themselves with the British in order to preserve their culture and stop encroachment upon their lands.

Detailed explanation-3: -Cherokees and Creeks (among others tribes) in the southern interior and most Iroquois nations in the northern interior provided crucial support to the British war effort.

Detailed explanation-4: -Isaac Brock relied heavily on a Native confederation led by the Shawnee war chief Tecumseh. Opposed to American expansion beyond the Ohio River, Tecumseh, and his brother, Tenskwatawa, or the Prophet, formed a pan-Indian alliance to resist the United States.