After the passage of the 13th, 14th, and 15th amendments, african americans continued to experience political and economic oppression mainly because:.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.

answerexpressing public opinion and morality;

in order to keep competitors from increasing or decreasing the prices they may establish, usa in the period of 70s set very democratic price - abut 1 dollar per gasoline so that their offer will be more affordable and attractive.