What did the social class with the largest number of people contribute to early civilizations?

Who issued the ruling for the supreme court? dred scott roger b. taney abraham lincoln john c. calhoun

The belief that war often drives civil modifications to a society is based upon the evidence that in times of external conflict, a society is forced to abandon long held discriminatory values to:

Aside from low birthrates and high death rates, what can cause a country’s population to decline