To find a shorter route to asia
Well ancient Greece was an oligarchy (kind of like a democracy). Greece has City States, as well as Ancient Mesopotamia. Mesopotamia had kings though, but was ran like an Oligarchy.
Volunteer soldiers. In America, there are no enlisted men, only citizens willing to give up their lives for their country. But during a serious war, there can be soldiers being deployed against their will so that there are more soldiers to help during the war.
It was very, very important for women to start working during the war because so many people were deployed that the demand for jobs in factories and other places was far higher than there were people available. Also, there were not enough women in the workforce at that time to fill those open positions. They filled many jobs in making supplies for war (that would normally be filled by men). Initially it was difficult to recruit the women (who were originally fitting the bill of "housewives"), and this is where those "We Can Do It" signs with "Rosie the Riveter" came about.
King George quite literally represents king george