Answer: They Depended on a system of canals that they were building to bring the water fron rivers into their fields
Explanation:
Answer: professional criticism
Explanation:
<span>A barter system is an old method of exchange. Th is system has been used for centuries and long before money was invented. People exchanged services and goods for other services and goods in return. ... The value of bartering items can be negotiated with the other party.</span>
Answer:
Because of all of the trees they cut down.
Explanation:
