Answer: Over time, monsoons weakened, enabling agriculture and civilization to flourish along flood-fed riverbanks for nearly 2,000 years. Eventually, these monsoon-based rivers held too little water and dried, making them unfavorable for civilization.
Explanation: i just know
John Tyler he was the 10th president
A major reason for Japan's policy in Asia was to obtain natural resources.
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 :)