Expand your
Research:
  Journals And Magazines
  The Web's Best Sites

Photograph:Worshippers in a Roman Catholic church face the altar, which is heavily decorated. Roman Catholic …
Worshippers in a Roman Catholic church face the altar, which is heavily decorated. Roman Catholic …
Bill Wassman—Lonely Planet Images/Getty Images

With some 2 billion followers, Christianity is the world's most widespread religion. Christianity is based on the life, death, and teachings of Jesus of Nazareth. The religion has three main branches—Roman Catholicism, Eastern Orthodoxy, and Protestantism.