Who was the top of the feudal system hierarchy

Which of the following scenarios illustrates the cultural impact of expanded regional trade for postclassical civilizations? o a. the byzantine empire rises in place of the roman empire. o b. an islamic scholar attends a university in his hometown. o c. internal disputes weaken a large african empire. o d. an arabian sultan wears a robe made from chinese silk.

How did the growth of the middle class affect social reform during the industrial revolution?

1. what was the purpose of the communist international organization?