Henry Ford increased the production and sale of automobiles by introducing an assembly line and low prices.
The Space Race. One of the most important forms of non-violent competition between the U.S. and the USSR during the Cold War was the Space Race, with the Soviets taking an early lead in 1957 with the launching of Sputnik, the first artificial satellite, followed by the first manned flight.
B.many Americans loathed the idea of imperialism and saw it as a European phenomena, while others were very excited by the idea of imperialism and urged America to expand into other parts of the world
The answer should be:
Animal & human power were generally replaced with steam power.
I hope this helps you and answers your question correctly. i believe the answer is the Dark Age.
