Which treaty, signed in 1992, established the European Union and paved the way for the Euro as a common currency?

Question

Treaty of Rome
Treaty of Versailles
Treaty of Maastricht
Treaty of Lisbon

Answer 1

The treaty you are referring to is the Treaty of Maastricht. Signed in 1992, it established the European Union and paved the way for the introduction of the Euro as a common currency.