How did large coorperations achieve economies of scale

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.

What country aided north korea in the korean war?

Do you think the cartoonist has a positive or negative view of bryan? why?