Debt. USA owed a lot of money, to a lot of countries.
France, Denmark, and Spain to name a few...
The idea of species changing overtime explains Darwin's observation about the Galapagos Islands finches.
The "mandate of Heaven" was a belief the Chinese Held regarding the ruler's ability to rule based on merit. This type of belief also stated that the ruler had the blessing of the gods.
This statement is true.
When making foreign trading policies, things like tariffs decide how many things will be imported from where. If you have a most favored nation, you give them lower tariffs and thus motivate them to trade more with you and you help their economy. There can also be an opposite when you make tariffs higher for someone in order to reduce their importing.
