The main conflict between European colonists and Native Americans was over land. What principle refers to peaceful seizure of land that was considered to be underutilized by the indigenous people

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

health and medicine because people are dying from not being healthy or not strong enough medicine

the installment plan of the 1920s, an arrangement that allowed people to buy what they wanted with a small down payment and pay off the rest in monthly installments, provided americans a way to own what they did not have the money to buy.

the answer d vegetative