Title: World currency - Wikipedia
Headings: World currency
World currency
Contents
History
Spanish dollar (17th – 19th centuries)
Gold standard (19th – 20th centuries)
Pound sterling
U.S. dollar
Euro
Recent proposals (21st century)
Governmental
Single world currency
Difficulties
Limited additional benefit with extra cost
Economically incompatible nations
Wealth redistribution
Usury
See also
References
External links

Content: It was also used in other European states including the Austrian Habsburg territories. After Mexican Independence in 1821, the Spanish dollar continued to be used in many parts of the Americas, together with the Mexican Peso from the 1860s onward. The Mexican peso, the US dollar and the Canadian dollar all trace their origins back to the Spanish dollar, including the use of the caduceus sign ($), also known as the dollar sign. Gold standard (19th – 20th centuries)

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Main article: Gold standard
Prior to and during most of the 19th century, international trade was denominated in terms of currencies that represented weights of gold. Most national currencies at the time were in essence merely different ways of measuring gold weights (much as the yard and the meter both measure length and are related by a constant conversion factor). Hence some assert that gold was the world's first global currency.