Some Native American tribes thought by making a partnership with the settlers that they would be able to trade goods with the settlers and bring peace among the colonists and themselves. A short time of peace was brought among them, before fighting broke out.
They seized existing trading posts using force.
diseases from Europe such as influenza an small pox
the refusal of the Incan emperor to cooperate with the Spanish
hope this helps!!
Most. experience public satefy official