Why is scarcity a universal problem

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.

The invasion of europe began in the country of ° france ° germany ° belgium

Which statement best explains the privileges and immunities clause of article iv of the constitution?