Triangular trade

The triangular trade was the three-legged route that made up the Atlantic slave trade. The trade traffic flowed to and from three general areas on either side of the Atlantic Ocean. These areas form a rough triangle when viewed on a map. They were in Europe, Africa, and the Americas. The Atlantic slave trade began in the early 1500s. It was made illegal in England in 1807 and in the United States in 1808. However, the slave trade continued illegally until the late 1800s, after nearly 400 years.

Source: britannica.com