Original sentence: A large part of the population remain members of the Church of Iceland, but are actually irreligious and atheists, as demonstrated by demoscopic analyses.Before that, between the 9th and 10th century, the prevailing religion among the early Icelanders (mostly Norwegian settlers fleeing Harald Fairhair's monarchical centralisation in 872–930) was the northern Germanic religion, which persisted for centuries even after the official Christianisation of the state.Freedom of religion has been granted to the Icelanders since 1874.Religion in Iceland has been predominantly Christian since its adoption as the state religion by the Althing under the influence of Olaf Tryggvason, the king of Norway, in 999/1000 CE.Since the late 20th century, and especially the early 21st century, religious life in Iceland has become more diverse, with a decline of Christianity, the rise of unaffiliated people, and the emergence of new religions, notably Heathenry, in Iceland also called Ásatrú, which seeks to reconstruct the Germanic folk religion
Edited sentence: A large part of the population, despite remaining members of the Church of Iceland, are actually irreligious and atheists, as demonstrated by demoscopic analyses.Before that, between the 9th and 10th century, the dominant religion among the early Icelanders (mostly Norwegian settlers fleeing Harald Fairhair's monarchical centralisation in 872–930) was the northern Germanic religion, which persisted for centuries even after the official Christianisation of the state.Despite this, freedom of religion has been granted to the Icelanders since 1874.Religion in Iceland has been dominated by Christianity since its adoption as the state religion by the Althing under the influence of Olaf Tryggvason, the king of Norway, in 999/1000 CE.Since the late 20th century, and especially the early 21st century, religious life in Iceland has become more diverse, with a decline of Christianity, the rise of unaffiliated people, and the emergence of new religions, notably Heathenry, in Iceland also called Ásatrú, which is a reinstitution of the Germanic folk religion