Answer:
economic is the social science that studies how people interact with value,in particular thae production ,distribution,and consumption of goods and services
The Aksum Empire was the result of two world hubs sharing their collective learning about agriculture, and rose to become a great power in the ancient world because it formed a crucial link between East and West on the supercontinent of Afro-Eurasia.
I think your answer is A.... I hope this helps have a splendid day
Its called a caste. Caste is a lifelong social group into which an individual is born