Catholic Europe

The Catholic Church in Europe also known as Roman Catholic Church in Europe is part of worldwide Catholic Church in full communion with the Holy See in Rome, including represented Eastern Catholic missions. Demographically, Catholics are the largest religious group in Europe.

About 35% of the population of Europe today is Catholic, but only about a quarter of all Catholics worldwide reside in Europe. This is due in part to the movement and immigration at various times of largely Catholic European ethnic groups (such as the Irish, Italians, Poles, Portuguese, and Spaniards) to continents such as the Americas and Australia. Furthermore, Catholicism has been spread outside Europe through both historical Catholic missionary activity, especially in Latin America, and the past colonization and conversion of native people by Catholic European countries, specifically the Spanish, Portuguese, French colonial and Belgian colonial empires, in regions such South America, the Caribbean, Central Africa and West Africa, and Southeast Asia.

As the Vatican State is a theocracy, it cannot become a member of the European Union. However, traditionally there are very strong ties of the Holy See with the neighbor country of the Vatican City Italy and also with the European Union. Since 1970 the European Union accredits an official representatives from the Holy See (an Apostolic Nuncio) to the EU. Even though the Vatican City is not an official member of the European Union, it has adopted the Euro as its currency and has open borders with the Schengen Area.

...
Wikipedia