According to confucius, who is being led by a good leader better than being led by laws?

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 do you think was a drawback to this method of calculating distance

What from the columbian exchange had perhaps the biggest impact on the world?