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 :)
St Francis of Rome began to preach love.
1.............................
Answer:
Michio Kaku established the nineteenth and twentieth centuries as an "Age of Discovery" in "Choreographers of Matter, Life, and Intelligence
d) by listing the significant scientific developments of the era.
Explanation:
According to Michio Kaku during the XIX and XX century the humans have discovered the most uses for advance technology and these discoveries act as the base for future developments of the civilization.
He believes that in the year 2100 the humans will be able to move objects with the mind and the computers would read minds.
