Answer:French settlers began to exploit American Indians.
Explanation:
A unitary state is a state governed as a single power in which the central government is ultimately supreme and any administrative divisions (sub-national units) exercise only the powers that the central government chooses to delegate. The majority of states in the world have a unitary system of government.
There were mountains, barriers, and lots of water around to prevent invasion and disease
The highly profitable crop, well I think it was tobacco had a test on this so That's what I think, Hope this helped. :3