What are 2 reasons the Native Americans would build their homes in cliffs?

One reason why is that they would flee if someone comes there. The second reason why is that they would also sometimes fight if an enemy tribe would attack them.

Explanation:

Let me know if I am wrong.

italy:

classic, nostalgic, romantic and beautiful. no place better than italy or sicily.

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225