Answer: an economic phenomenon where two parties each hold an item the other wants, so they exchange these items directly without any monetary medium!!
hope this helped :)
1. the root language that west african people spoke was Arabic
2. the historical city was a major goal of the crusades was Jerusalem
3. the asian nation had a similar feudal system to that of western Europe is Japan
4. following groups of people did not participate in trade along the Swahili Coast of East Africa is Bantu Swahili
5. the ottomans were Turkic people from central Asia and Anatolia
I think it's around the 1850s
Malcolm X promoted that idea of "separating the races" of white and black as one of the answers to the race problem in the United States, since he believed the two races could never truly live peacefully in a fully-integrated society.