The triangle trade is so called because it took place between three different regions on all sides of the Atlantic Ocean. Ships that traveled these trade routes carried African slaves, manufactured goods, and cash crops between West Africa, North America, and Europe. African slaves were moved by ships during the triangle trade.
I would say J.D Salinger because his first original work wasn't published until 1965 so he could have been an american author famous in the 1950s if his first work wasn't till 1965