A fish or a cross
The main religion is Christianity...
The most popular religion in Zambia is Christianity. The Zambian constitution recognized Christianity as the official religion in 1996.
Christianity is their main religion. In Canada there is no one religion, although Christianity is one of the most followed religions, it is not the main one because there is no main religion.
Christianity.
The main religion in Venezuela is Christianity
Christianity is Alaska's main religion.
the main religion is Christianity, Hindu
Australia has Christianity as its main religion.
The main religion in Iceland is Christianity.
Christianity became the main religion of Spain during the Roman days. Christianity spread around the Roman Empire and became its main religion
Christianity is their main religion. In Canada there is no one religion, although Christianity is one of the most followed religions, it is not the main one because there is no main religion.
The main symbols of Christianity if I am understanding the question is the cross, a star, a dove, chalice for wine, bread, fish and a crown of thorns.