euro
They use the euro
In France they use the Euro. French people can use whatever currency is appropriate in the country they are in.
The currency of France is the Euro (€).
The French use € as the symbol for their currency, the Euro.
This is a matter of language use in non-French speaking countries. It is probably that way to avoid confusion with the other Guianas (there were five separate colonies from different European countries). To the French, French Guiana is simply La Guyane.
sou
Euro
Belize is the only mainland country in Central America that does not use Spanish as a main language. In South America: Falkland Islands, South Georgia, South Sandwich Islands and Guyana = English. French Guiana = French. Suriname = Dutch. Brazil = Portuguese.
In Colombia the peso (100 centavos) is the currency.
Texas uses dollar bills as their currency.
Devil's Island, off the coast of French Guiana, was once the site of an infamous penal colony.
Your belated response has lost its currency. What type of currency does Italy use?