Dollar
Dollar () is the name of more than 25 currencies. The United States dollar, named after the international currency known as the Spanish dollar, was established in 1792 and is the first so named that still survives. Others include the Australian dollar, Brunei dollar, Canadian dollar, Eastern Caribbean dollar, Hong Kong dollar, Jamaican dollar, Liberian dollar, Namibian dollar, New Taiwan dollar, New Zealand dollar, Singapore dollar, Trinidad and Tobago dollar, and several others. The symbol for most of those currencies is the dollar sign $; the same symbol is used by many countries using peso currencies.
The name 'dollar' originates from the tolar which was the name of a 29-gram (1.0 oz) silver coin called the Joachimsthaler minted in 1519 in the western part of Bohemia (now the Czech Republic). The word thaler itself comes from the German word Thal, i.e. 'valley'.
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