Answer:
Tecumseh was frustrated by the unexpected British-American armistice, which came at a time when his confederacy was attacking other American forts and were in need of British support.1.
2. British
3 not to about the last one
Explanation:
The Aborigines found themselves in a situation were they were systematically assimilated into a new culture without being able to do anything. The children where taken away from their parents, and they were raised by people that were of British descent or were educated in British based institutions. That led to the children learning only what their British parents and institutions were teaching them, thus not being able to preserve anything from the Aboriginal culture.
Also, there were forced marriages between the British settlers and the Aboriginal women with the purpose of ethnically wiping out the Aborigines in few generations. That was one of the worst methods that has been used for destroying indigenous people.
The colonies were better off governing themselves without British influence.