Answer:
The answer is mass production, interchangeable parts, and mechanization revolutionized American industries.
I believe the answer would be C due to the fact that it touches on different reasons in the paragraph and doesn't speak on only 1 reason of marriage <span />
It changed the life for many women and african-americans by before the war they were being treated very badly and after the war they were being treated better because their masters were dead because they fought in the war
It was electricity that was being invented causing the extended number of hours in a day permitting Americans to work and even play. Electricity powers companies, industries, manufacturing plants down to the most basic unit, the homes, schools, appliances, gadgets and the likes. It was said that electricity has been invented by an American inventor named as Thomas Alba Edison however, there are a lot of arguments saying that it was not Edison who first discovered electricity. The electricity has become a vital part of the lives and business of all the people in the world.
March 17, 1930 is when the empire state building was built.
