The institution responsible for managing a nation’s money supply is the
a. central bank
b. trade commission
c. national security
d. government regulator

A. The central bank

A central bank, also known as either a reserve bank or a monetary authority is what controls the the nation's money supply. It also manages a state's currency, interest rates and usually the commercial banking system as well.

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.