Answer:
The Answer is C
Explanation:
i'm in K12 i just took the test.
One of the main reasons why trade in West Africa was so important is because this was the "hub" of the African part of the Triangle Trade--meaning that a large majority of the slaves used in the New World came from West Africa.
I believe the answer is globalization
A: before the Northeast became industrial, it was mostly agrarian, like the South, but without as many slaves, due to them not being profitable because of the rocky soil. Afterwards, the South stayed agrarian, while some Northern states even went as far a abolishing slavery, increasing the sectional differences even more.