Why did early civilisation begin in river valleys?

The early civilizations began near a river because they could get water from there. They also found animals their who needed water too.

they began around water because they could fish there and hunt the animals near thereThey could farm the fertile ground, and the river was a water source and food source also Bathing themselves in the water since there was no indoor Plumbing.

hope it helps,

yukti> :D :)