Based on Macroeconomic theory, the Fed has used three tools to influence the money supply, which include "The Fed buys $100 million in short-term Treasury securities -- this is to increase the money supply (increase.)."
The other tools to influence money supply include the following:
The Fed sells $200 million in mortgage-backed securities -- this is to decrease the money supply (decrease).
The Fed raises the interest rate charged on loans to banks -- this is to decrease the money supply (decrease).
The Fed sells $300 million in long-term Treasury securities - this decreases the money supply (decrease)
Hence, in this case, it is concluded that there are various means by which the Federal government controls the money supply.
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