What was the main goal of Justinian as emperor? A. to defeat the Roman empire
B. to protect the Byzantine empire from Muslim invaders
C. to spread Orthodox Christianity
D. to regain Roman lands that had been conquered

D.) To regain Roman lands that had been conquered.

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.

a punishment or the threat of punishment used to enforce conformity. enforcement of norms or shared rules of conduct that tell people how to act in specific situations. social control. not everyone internalizes all of society's norms, and some people must be motivated by self-fulfillment.