I know that some things that are in the naturalization process are:
Knowledge of the presidents, Knowledge of basic math/reading and writing.
The end of the Civil War (1865) to about World War 1 (1918)
Hope this helps :)
Answer:
In a system known as the triangular trade, Europeans traded manufactured goods for captured Africans, who were shipped across the Atlantic Ocean to become slaves in the Americas. The Europeans, in turn, were supplied with raw materials.
