Currencies and Exchange Rates

The Maastricht Treaty, signed in 1992, established the European Union and created the framework for the Economic and Monetary Union (EMU) that led to the creation of the euro. The treaty set convergence criteria that countries had to meet to adopt the single currency. The euro was introduced as an electronic currency in 1999 and as physical notes and coins in 2002.

Indonesia's currency is the Rupiah (IDR), which has been the country's official currency since independence. The term 'Rupia' in the option appears to be a variant spelling or abbreviated form. The Rupiah is issued and regulated by Bank Indonesia, the country's central bank.

The Indian rupee symbol was adopted in 2010 and the government estimated it would take 18-24 months for global recognition and adoption in international financial systems. This timeline was set for worldwide acceptance and integration.

India became the fifth country in the world to have a distinct currency symbol, after the United States ($), United Kingdom (£), Japan (¥), and the European Union (€). The rupee symbol (₹) joined this exclusive club in 2010.

Several countries use variations of the rupee as their official currency, including Nepal, Sri Lanka, Indonesia (rupiah), and Pakistan. These countries share historical currency ties to the Indian subcontinent.

The Russian currency is called the Ruble, but both 'Rouble' and 'Ruble' are accepted spellings - the former is more common in British English, while the latter is the standard transliteration. The question cleverly tests both spelling variants as correct options. 'None' is incorrect because both spellings refer to the same currency.

Sweden uses the Krona as its official currency, not the Euro despite being a European Union member. The Franc is Switzerland's currency, while Dollar is used by the United States and several other countries.

Cuba's official currency is the Cuban Peso. The Dollar is used by the United States, Schilling was Austria's currency before Euro adoption, and Ruble is Russia's currency.

Australia uses the Australian Dollar as its currency. The other options are currencies from different countries: Schilling (Austria, pre-Euro), Ruble (Russia), and Peso (used by several Latin American countries).

Russia's official currency is the Ruble. The Dollar is used by the United States, Schilling was Austria's currency before Euro, and Peso is used by several Latin American countries like Cuba and Mexico.

Uruguay uses the Peso as its currency. The Dollar is used by the United States, Schilling was Austria's currency, and Ruble is Russia's currency.

Switzerland uses the Swiss Franc as its currency, not the Euro despite being surrounded by Eurozone countries. The Krona is used by Sweden, while Dollar is used by the United States and Australia.

Zloty (Polish złoty) is indeed the official currency of Poland. It has been Poland's currency since the medieval period, with the modern version being reintroduced in the 1920s.

The official currency of Uruguay is the Uruguayan Peso (UYU). The other options are incorrect: Guarani is Paraguay's currency, Real is Brazil's, and Bolivar is Venezuela's. Uruguay's peso has been its currency since the 1800s, though it's been revalued multiple times.