Most people in Spain belong to the Catholic Church. They are Catholics.
Because Colombia was colonized by Spain, and Spain was Catholic.
Spain is mostly Roman Catholic, but has pockets of Muslims as well. There are diverse existences of other religions, however these are the largest. There is also a growing Atheist population in Spain.
Spain is mainly a Catholic country. It has been for centuries.
Because Spain had the "most Catholic monarchs" who sought to preserve the faith in their country unspotted by protestant heretics.
I believe Spain is 99% Catholic
most catholic king
Although Spain no longer has a state religion but Roman Catholicism is still the religion followed by most Spaniards. According to an estimate 69 percent of people in Spain identify themselves as Roman catholic.
Most people in Spain are Christians.
Christianity, mainly roman catholic.
Roman Catholic. It is a very Catholic country in general just like Italy and Spain. Like in most countries there are more and more young people not going to church though.
All religions are allowed in Spain, although the Roman Catholic Church is, by far, the most popular.