Which of the following best explains why many of the earliest civilizations developed in river valleys following the neolithic revolution?

a)river valleys provided early civilizations with fertile soil that allowed for farming.

b)river valleys were excellent locations to hunt animals needed to feed early civilizations.

c)falling water levels in rivers early civilizations to travel long distances more easily.

d)rising temperatures forced people to move from mountains to safer river valleys.

A. for Apex River valleys provided early civilizations with fertile soil and that allowed for farming.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.