The U.S wanted to remain neutral, based on what Woodrow Wilson wanted, but after Germany started sinking U.S ships, they got included.
Some of the philosophers ideas may be a threat to Greek tradition because their logic is not exactly originate from the impulse of gods.
It would be the "a. Social Security Administration" that was begun during the New Deal and still exists today, since many people rely on this in order to retire later in life.
The idea is known as the Republican form. The idea is that people democratically elect those who would represent them in a government, and those people would be held accountable for what they've done if they do something opposite to the will of the people. It's the only way that a democracy can work properly because others would be impossible with that many people.