How did growing tension between the United States and the Soviet Union lead to advancement in weaponry and space exploration

Oque provoca coroço no peito do homen?

The factory system of the early-19th century caused a) a decrease in farm production. b) an increase in rural population. c) an increase in urban population. d) high unemployment in other areas.

How and why did the policies of the federal and state governments toward native american people change between 1790 and the 1850s. what were the reaction of native american people to these policies?