A dollar.
Euros or eurodollars
A US dollar is worth 0.9822561 of a dollar in Europe
Eurodollars Not to be confused with 'Euros', which is a totally different currency.
200 pesos in Europe; not mexico
... it is called ... A DOLLAR! No country in Europe has a currency called dollar. Examples of countries with currencies called dollar are USA, Canada, Australia, Singapore, and more besides.
Buck is a slang term for a US dollar so one buck is equal to one US dollar
Jasmine Tambyah has written: 'The US dollar in 1989' 'A medium-term outlook for the British pound, July 1988' 'The US dollar in 1990' 'A medium-term outlook for the US dollar, February 1988'
Around 0.68 Euro
Europe does not use dollars. The currency in Europe is the Euro, and as of today the value of €1.00 is US$1.406
I would deduce that the dollar was pretty close to worthless in Europe. However, I would be more concerned about the US value of Russian rebels. There are being valued at 4 cents each. No person - whether they are rebels or not - can be valued so low.
The US dollar is equal to 0.738934457 Euros. Euros are the common form of currency in Europe.
Jan 2010 : Most of Europe now uses Euro : $1 = €0.695. UK : $1 = £0.615.