After 1492, the Atlantic Ocean Became a Bridge Rather Than

After 1492, the Atlantic Ocean became a bridge rather than a barrier for Europeans. As a result, all of the following occurred except:

A) diseases brought from Europe depopulated the Americas.
B) Africa became involved in the transatlantic slave trade.
C) Europeans were able to trade directly with the East for the first time.
D) the Italians expanded their trade networks.