The Treaty of Maastricht in 1992 and further expansion was the beginning for the dreamed European empire.<ref>https://europa.eu/european-union/about-eu/history/1990-1999_en</ref> | The Treaty of Maastricht in 1992 and further expansion was the beginning for the dreamed European empire.<ref>https://europa.eu/european-union/about-eu/history/1990-1999_en</ref> |