south America
Catholicism.
Catholicism
Christianity - and the particular denomination is Catholicism
Catholicism
Protestantism and Catholicism are both equally the most popular. In southern Europe, Catholicism tends to be more dominant, while in the north, Protestantism is.
... Catholicism is a religion itself. The only Catholic religion is Catholicism.
Roman Catholicism, it might still be the most popular.. :)
Christianity, mainly catholicism
Christianity, Roman Catholicism is the largest sect.
Catholicism.
As usual in Latin American countries, Catholicism is the most popular religion.
Italy has the highest percentage of Catholics, at 96.55%.