Question

which is big religion in the world ​

Answer 1

Answer:

Christians remained the largest religious group in the world in 2015, making up nearly a third (31%) of Earth's 7.3 billion people, according to a new Pew Research Center demographic analysis.

Explanation:

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Answer 2

Answer:

Christianity is the largest religion in the world, with roughly 2.4 billion adherents, or 33% of the total population.