Answer: working conditions in the cities are difficult and getting worse
Explanation:
John Dewey, American educator, wrote the very influential book called "Democracy and Education". He was a wise man with strong political and social issues, that's why his ideas are considered to be the most influential in education and social reform throughout the educational history of America. He is often associated with a terms of pragmatism and functional psychology.
B describes the lost generation.
The United States has been a leading member of the United Nations although there have been disputes along the way.
If one of the answers is machines then that is the answer
