Which resources most directly led to the development of early civilizations in river valleys? select the two correct answers.
a.
fertile soil
b.
fresh water
c.
metal ores
d.
slaves
e.
stone

A. Fertile soil & B. Fresh water

Explanation:

The reason early civilizations came to be was because people no longer had to look for food, go out to hunt or be Nomads. There was a surplus of food, and that allowed civilizations work on other stuff.

is there a year set? the question is incomplete

answer; the federal reserve system;