Pioneers who crossed the western mountains in the mid-1800s were threatened by

What kind os source would a historian use to get a firsthand account of a past event

Which of the following best describes the state of the us economy at the end of world war ii? a it was starting to come out of the great depression. b it was out of the great depression and doing better. c it was one of the most powerful economies in the world. d it was entering another recession.

What were the 2 main elements as a result of the treaty?