Final answer:
During the Revolutionary War, the Iroquois Confederacy split, with four nations siding with the British and two nations supporting the Americans. After the war, some Iroquois nations migrated to Canada, while others remained in the United States.
Step-by-step explanation:
The Iroquois Confederacy, made up of six nations including the Mohawk, Cayuga, Onondaga, Seneca, Oneida, and Tuscarora, underwent a major split during the American Revolution. Four of the nations (Mohawk, Cayuga, Seneca, and Onondoga) allied with the British, while the remaining two nations (Oneida and Tuscarora) supported the Americans. The Iroquois Confederacy's decision to side with the British led to a political divide within their alliance.
After the Revolutionary War ended, some of the Iroquois Confederacy nations migrated to lands in present-day Canada, particularly the Mohawk and the Cayuga. The Oneida, Tuscarora, and Onondaga nations stayed in the newly formed United States and continued to live in their traditional territories.