The Industrial Revolution made machine based manufacturing more common, and increased the population and average income. Instead of farming, people came to cities to work. Women and children worked in factories as well. Those are the effects that changed the United States.
Number one is correct.
two is letter 'C', because railroad to horse drawn carriage is a step back, then horse drawn carriage is two steps forward. it's not "progression"
The communist regime of USSR led by Gorbachev was no longer willing to intervene in the eastern countries, in a time that the countries were facing increasing pressure for freedom and liberties. The success of some early uprising in countries like Hungary endeared other countries to follow suit.
The Sacco and Vanzetti case, the Red Scare, and the activities of the Ku Klux Klan all represent the fear of the spread of communism held by some Americans in the 1920's.
