| United States dollar - definition of United States dollar in Encyclopedia (3631 words) |
 | Until 1974 the value of the United States dollar was tied to and backed by either silver, gold, or a combination of the two. |
| Critics also state that bills should employ braille codes to make the currency more usable by the vision impaired, since the denominations are all the same size, and cannot be distinguished from one another non-visually. |
| The name for the United States dollar comes from the Spanish dollar (which itself derived from the thaler) which was the silver coin widely circulated in the United States during the time of the American Revolutionary War. |
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