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.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

lincoln won 212 electoral votes to mcclellan's 21 votes, and lincoln beat mcclellan. is the main reason lincoln won in 1864.