Feudalism is the prevailing social framework in medieval Europe, in which the honorability held grounds from the Crown in return for military administration, and vassals were thusly inhabitants of the nobles, while the workers were obliged to live on their ruler's property and give him reverence, work, and an offer of the deliver, notionally in return for military insurance.
Triangular trade increased the demand for both land and slave labor
I believe it was because both blacks and whites were moving west to the cities to find jobs.
hope i helped :)
