Trade in the Vedic Age led to (904 points)
 a the rise of kingdoms because of the importance of controlling land and long-distance travel routes
 b the building of an extensive system of roads because of the difficult terrain
 c the creation of a large banking class because of the need to exchange different currencies
 d the development of a centralized government that controlled the economic decisions of its people
The invention of the zero made mathematics (4 points)
 a easier to spell
 b easier to write
 c hard to add
 d hard to write