What caused Greek city states to be isolated A. rivers
B. deserts
C. rugged mountains
D. continents

C

Explanation:

From early times the Greeks lived in independent communities isolated from one another by the landscape. Later these communities were organized into poleis or city-states. The mountains prevented large-scale farming and impelled the Greeks to look beyond their borders to new lands where fertile soil was more abundant.

a) it is located in central mexico.

the money supply is the total amount of money available in the economy. how do changes in the money supply affect people and businesses?