Why are certain countries in Europe more religious than others. ?

For example, Slovakia and the Czech Republic use to be one country, but Slovaks are rather religious and Czechs are almost 100% irriligious. Spain is rather religious, but France, their neighbors are not. Greece and Serbia are religious, but Albania is not. Italy is rather religious, but Switzerland is not. Could a... show more For example, Slovakia and the Czech Republic use to be one country, but Slovaks are rather religious and Czechs are almost 100% irriligious. Spain is rather religious, but France, their neighbors are not. Greece and Serbia are religious, but Albania is not. Italy is rather religious, but Switzerland is not. Could a European please explain this to me? Is religion culturaly more important in some countries than others?
10 answers 10