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:
I believe it is D, not entirely sure
There were tribes all over the place, practically each one spoke different languages and lived differently
Hey!
Your answer would be (miners and farmers).
I hope this helps!
I think he meant he had absolute power because he has the power over all the state