Ok I'm not 100% sure but I think the answer is Manchu I hope this helps you
The Sons of Liberty were a grassroots group of instigators and provocateurs in colonial America who used an extreme form of civil disobedience—threats, and in some cases actual violence—to intimidate loyalists and outrage the British government. The goal of the radicals was to push moderate colonial leaders into a confrontation with the Crown.
The correct reason is that Tecumseh was killed, which ended the possibility of a Native American confederation to oppose the United States. Hope this helps.