At the end of the French and Indian War the British government signed treaties with the Indians in the Ohio territory to restrict the American colonists from moving into there land. The American colonists ignored this British treaty, and started settling in the Ohio, Kentucky, and Tennessee areas. The British government, unlike the American government in the following century (which very seldom honored the treaties they signed with the Western tribes), tried to honor their treaties with he Indians and keep the Americans out. This brought the Americans and British into confrontation and was one of the main factors that led to the Revolution.
It's two of them, They were dependant on the USSR and They were neighboring states.
If you have to pick one, it's the first one I said.
Food, Clothing, and medical attention. The slaves first needed care then places to live and work to make money.
The Enlightenment movement hugely influenced the west, especially the United States and the Founding Fathers. The system of checks and balances as well as the the separation of power into legislative, judicial and executive branches come from the Enlightenment writers. The famous line from the Declaration of Independence "Life, Liberty and the pursuit of Happiness" was inspired by the writings of Locke and his saying of "Life, Liberty and Property" as we can see.