This us poster from the world war i era best illustrates that

Women did not have many rights or important positions in society back in that time. Considering this and the image of a nurse with what seems to be a degree of some sort in her hand, it is only logical to assume that the image infers that good things are happening to women considering the context, as in, they now have more influence in society somehow.

The nurse in the image is clearly a sign of:

D. Life was changing for women in the United States

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.

the exclusive possession or control of the supply or trade in a commodity or service.