The largest religion in the US is Christianity but it's a country of many different religions. Church and state are separated, so we are not a country of any one religion.
In Latin America the main religon is Catholism. There are others but this is the one that you find the most.
The main religon in Russia is orthodoxy. but a small amound (around 5%) are Muslim.
The main religon in Canada is Catholic and Protestant which are both branches of the Christian religon.
Roman Catholicism is by far the largest faith practiced by both Mexicans and Central Americans.
Christianity
catholic
cristianity
Judism
Christian.
Islam
Christian
Lamaism.