It's mainly because of A and B, because after the war, the industrial resolution happened, and farmers are replaced by machines, farmers has no work to do, their speed is no compare to the machines, so they must move to another place. Also the population in Europe is growing in a extremely fast speed. Hope that helps :)
Answer:
A. Democracy
Explanation:
A democracy government means rule of the people"
A Democracy is a system of government in which the citizens exercise power directly or elect representatives from among themselves to form a governing body, such as a parliament.
You Could Only Find Happiness By Studying Nature And Other Simple Things In Life .
Bc it basically told how it was built and shapped over the years
