Answer:
I would say A. not 100% sure but seems the most logical.
Water was able to flow from a river or water way to a farm which fed cities it us also one of the reasons why The Roman Empire was so great is because of their amazing aqueduct which transported water
Answer:
C. A pull factor for accessible resources
Explanation:
Pythagoras was perhaps the first to realize that a complete system of mathematics could be constructed, where geometric elements corresponded with numbers. Pythagoras' Theorem (or the Pythagorean Theorem) is one of the best known of all mathematical theorems.