Final answer:
Advances in technology have allowed the U.S. to develop more complex currency notes that are difficult to counterfeit, but paper currency is still necessary. The responsibilities of the Fed have not decreased, but new security measures are implemented to combat counterfeiting.
Step-by-step explanation:
Advances in technology have allowed the U.S. to develop more complex currency notes that are more difficult to counterfeit. However, it has not eliminated the need for paper currency, as cash is still widely used for transactions. Additionally, technology has not decreased the responsibilities of the Fed, but rather has required them to adapt and implement new security measures to combat counterfeiting.
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