Which of the following was largely responsible for the creation of early river valley civilizations?
a. warfare, which encouraged societies to be nomadic
b. new religions, which forbade hunting and gathering
c. currency, which allowed groups of people to trade
d. farming, which provided surplus food for societies

Pl did european countries want to find a shorter route to the far east? a. costs would be lower. b. they could take more trips. c. the route they used was rough and dangerous. d. sailors did not want to be away from home so long.

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

Concerns about the environment prompt congress to pass a $1 surcharge tax on each gallon of gasoline. which statement best describes the impact of such a tax