Answer:
Creek leaders executed McIntosh because he agreed to sell the Creek's remaining land to the United States without their consent.
Step-by-step explanation:
William McIntosh was an important chief of the Muskogee and one of the signatories of the Treaty of Indian Springs.
Although the Upper Creeks had vowed to kill anyone who was to sell or trade in additional tribal areas, McIntosh, along with eight other chiefs, signed the Treaty of Indian Springs on February 12, 1825. With this contract, all areas of the Muskogee were sold for $400,000. According to the fifth article in the contract, McIntosh received $200,000 upon signing the agreement. It is unclear whether he approved the contract because of this or actually believed that this was the best solution for his people.
As a consequence, McIntosh was executed by stabbing his heart and several shots. He was scalped and his body was thrown into the river.