Why did the "Age of Ingenuity" begin after the Civil War?

How did enlightenment ideologies influence the declaration of independence is f he rights of man and citizen

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.

Which of the following factors care of many european nations to occupy and colonize nations in southeast asia