Norse paganism.
There is no official religion in Sweden since 1999
The main religion in Sweden since the protestant revolt has always been Lutheran, as has been its sovereigns. Queen Kristina abdicated the throne to become a Catholic.
I would say protestantism since that was the state religion of Sweden.
A lot of Swedes are atheist, but the prevailing religion in Sweden is Lutheran Protestantism.
All five countries have been Lutheran protestant since 1520's - 1530's. First Sweden-Finland, shortly after Denmark-Norway-Iceland. Before that they were Catholic, typically since 10th century.
The Lutheran religion is the largest religion practiced in Sweden. It is practiced under the name, The Church of Sweden. This is also the largest Lutheran following in the world.
The majority religion in Sweden is Lutheran Protestant. Education in Sweden and in Scandinavia generally is liberal, democratic and free of charge, up to and including college.
nothing
Christianity
70% of the country is Lutheran and are members of the Church of Sweden.
It wasn't, Sweden became protestant in 1527.
1099