Which of these was a goal of the united states during world war 1

I think they just did it because Germany had bombed one of their boats and the us saw the need to retaliate

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.

Ithink the answer is b. shakeri hope im not wrong : )