I need an answer PLEASE ​

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.

In the supreme court’s decision in korematsu v. united states, the court said that korematsu

Why was russia drawn into a conflict with germany after ausria-hungary declared war on serbia ?