The religion with the largest population percentage in the world is Christianity.
Catholicism is the largest denomination within Christianity. Christianity itself is the largest religion in the entire world, hence Catholicism is a major world religion.
According to Operation World, the major religion in Congo is Christianity, primarily Catholicism.
confucianism was based off the teachings of a chinese man named confucius. it is not a major religion. it was a religion in china many years ago.
Judaism.
Islam
Islam is considered a major world religion due to the large number of followers, similiarities to other world faiths, the history of the faith and contributions of certain learned Muslims to fields such as science, art, mathematics, literature and architecture.
Sunni Islam is the most common religion in the Arab World, but every Arab chooses his own "dominant" religion or non-religion to believe in.
The Baha'i Faith, founded in 1844.
It is one of the 5 major religions in the world.
Hinduism
Antartica