Hoover supported voluntarism or individual voluntary efforts to assist others. He also encouraged other wealthy individuals to donate their money clothing or food to charity volunteer organization such as volunteers of America provided relief to millions of Americans during the depression.
Option 4:) World war two
All the other wars listed happened before communism spread
Objective compliment since the other person won't give you the answer
Before the formation of city states, Mesopotamians were nomadic tribes who moved around following the herds of animals. They survived off the land and the wild grains and other things they could find. Essentially, they were like the European Native Americans.
He was unable to prove his theory because he didn't have any proof.