Question

How did knowing how to cut and stack stones help early Andean civilizations grow?

A.
They built walls to keep out invaders.

B.
They built large buildings to store food.

C.
They built monuments to great leaders.

D.
They built irrigation channels to carry water where it was needed.

Answer 1

I think it’s either D or A

Answer 2

I’m pretty sure it’s D based on the the stones were used to keep things sturdy