Question

__________ became suitable sites for new civilizations like Mesopotamia because they provided arable land and sources for irrigation.


A.

Coastal plains


B.

Mountainous regions


C.

Tropical forests


D.

River valleys

Answer 1

dude if i keep helping u can u help me please ?

Answer 2

sure lol

Answer 3

ok it a btw

Answer 4

or that what it should be hold up im not 100% sure lwt me check

Answer 5

nope its the mountains

Answer 6

what do you need help with?

Answer 7

the question i just asked

Answer 8

right above dove's question