I know one reason and that is that both had a river system. This means that they were close to water so they had enough water for their crops
endocrine system and nervous system?
Answer:
The answer is a, the amount of moisture in the air.
Explanation:
The Fed creates money through open market operations, i.e. purchasing securities in the market using new money, or by creating bank reserves issued to commercial banks. Bank reserves are then multiplied through fractional reserve banking, where banks can lend a portion of the deposits they have on hand.