Considering the historians use of source material, which interpretation is most valid

Which of the following was not an effect of westward expansion? a. native american tribes suffered confinement on reservations. b. native americans learned new techniques of irrigation. c. many native americans died from the spread of disease. d. natural resources were depleted from misuse by white settlers.

What states were considered a part of the antebellum south?

The system of checks and balances ensures that