Answer:
The British said they would stop colonists from settling in the West.
Step-by-step explanation:
Most of the indigenous Native American peoples east of the Mississippi River were affected by the Revolutionary War and many communities divided over how to respond to these events. Although some indigenous tribes were on good terms with the American settlers, many natives opposed the United States, mainly because of the threat to their territory. Approximately 13,000 Indians fought alongside the British because the British said they would prevent settlers from settling in the West.