I have no idea what so ever as to what to do. what would i even google for this?

Roman Catholic:Italy::?:Sweden

meant to put Scotland intsead of sweden. Still help!

Scotland's major religion is Protestant.

To find the answer to your question, you can use a search engine like Google. In this case, you are looking for a term that represents a religious affiliation or dominant cultural characteristic in Sweden, similar to Roman Catholicism in Italy. One way to phrase your query is: "dominant religious affiliation in Sweden" or "major religion in Sweden."

When you search for these terms, you are likely to discover that the dominant religious affiliation in Sweden is Lutheranism. The Church of Sweden, an Evangelical Lutheran church, is the largest religious denomination in the country.