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 :)
Perhaps the most momentous decision the Founding Fathers made at the beginning of the Philadelphia convention was to create two separate houses in the legislature--the Senate and the House--in order to give each state fair representation.
The 1960 presidential campaign of John F. Kennedy, then United States Senator from MASSACHUSETTS.
Answer:
B
Explanation:
i just did this and i got it right :)