World Studies Demographics Research Project (World Religion)

World Religions:


Source:LiveScience

What are the four largest religions in the world?
What percentage of Christians are Catholic?
What is the second largest Christian sect?
What percentage of the world identify themselves as atheist?
What percentage of the the world consider themselves "non-religious"?
What are the four largest religions in the United States?
What is the largest Christian sect in the United States?
What percentage of Americans identify as Mormon?


CIA Factbook:
https://www.cia.gov/library/publications/the-world-factbook/index.html