Explain how the physical landscape has affected the development of agriculture and industry in the ancient world. why did many early farmers settle in river valleys?
a. mountains and hills were impossible to farm.
b. animals stayed away from the river valleys.
c. the valleys had water access and fertile soil.
d. the humans believed water killed evil spirits.

C. The valleys had water access and fertile soil.

Explanation:

This is the main reason why many early farmers settled in river valleys. The main advantage that river valleys provided was the availability of water. This was particularly important at a time when irrigation was non-existent. Moreover, land that is located next to rivers tends to be more fertile. This made farming easier and allowed large communities to develop.

because the vietnam war was fought in an especially brutal and untraditional way

your answer would be (b)