To prevent the concentration of unchecked power and to provide for checks and balances (prevent abuse or one branch being too powerful basically)
It destroyed a lot of homes and families in the community for the colonists and for the Natives too. It took years to repair the damage done and to cover the huge military expenses.
We have freedom of speech to say what we would like too. But if it degrades out higher power’s then it’s technically against the law. For social justice we can only say proven facts, anything else can we classified as a act of terrorism if we speak out again the government. Exp. Dr. Martin Luther King.