Answer:
D. The transatlantic slave trade developed.
Step-by-step explanation:
The transatlantic slave trade can also be regarded as "Euro-American slave trade" that that took place arround 16th to 19th centuries, where about 10 to 12 millions of enslaved African people were been transported by slave trader to countries and America stand as the main country here. Triangular trade route were used in moving this slave out of Africa. It should be noted that the transatlantic slave trade resulted from the growing demand for sugar in Europe.