Final answer:
The U.S. dollar differs from past currencies in being a fiat currency, widely accepted globally, and primarily in paper and electronic form.
Step-by-step explanation:
The U.S. dollar differs from money used in the past in several ways. Firstly, the U.S. dollar is a fiat currency, which means it is not backed by a physical commodity like gold or silver. In contrast, money used in the past, such as gold or silver coins, had intrinsic value. Secondly, the U.S. dollar is a widely accepted global currency, used for international trade and transactions. In the past, different regions or countries often had their own types of currency.
Lastly, the U.S. dollar is primarily in the form of paper bills and electronic transactions, whereas money used in the past often consisted of physical coins or other tangible forms of currency.
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