Imposition of quota laws.
Townshend acts would be my est answer.
Most would say A but that doesn't matter because a lot of black people come from the south. I'd say it's because more of the HISTORY of the south.
The Europeans wanted economic gain sorry that is all my brian could rake up.
The Delian League was formed to continue fighting the Persian Empire after Persia's invasions were finally defeated. .Those city-states who did not want to continue fighting Persia formed the Peloponnesian League, lead by Sparta. Under the Athenian leader Pericles, Athens began taking control of the Delian League.