One reason is that China is geographically closer to North Korea than the United States is. Also, both China and North Korea are communist countries, and China fought with North Korea during the Korean War, while the United States fought against North Korea.
A. Both men opposed the borders created by the Congress of Vienna.
b. Both men promoted nationalism to unify small states into larger nation-states.
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.
