They all have an effect on one another. With international trade comes trade embargoes if two or more nations don't get along. Global conflicts can also bring about a decrease in international trade for the offending nation as a sort of punishment. This is usually carried out by the UN but can also be done on a state by state basis.
The answer is no because the American culture wasent living in the time of the generation of the Africans but was born when the American and the African generation