During World War I, the main goal of the US government agency that created war posters was O to increase public support for the war.
to convince the soldiers in Europe to fight.
to help get President Wilson reelected.
O to take people's minds off the war.

The Answer is A

To increase public support for the war.

Explanation:

representative government

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity