What was the root cause of this conflict?

Write 300 word discussion about Indian Wars” as viewed through Roxanne Dunbar-Ortiz’ An Indigenous Peoples History of the United States, imagine that you are describing this conflict to another person who is not a member of this class and using Dunbar Ortiz’s text explain to them the answers to the following questions:

What was the root cause of this conflict?

Who were the players? How many factions were there? and finally how did the various sides view what was happening?