What name was given to the rebuilding of the nation after the american civil war?

How might the first nations have reacted when they saw that the europeans were moving onto their lands and disrupting their way of life? (this was when the europeans came to canada and tried to claim land to themselves)

When and why did the united states enter world war 2

John locke believed there was a social contract between a govemment and its people. what were the details of this contract?