The Major Religion of the World

I think the major religion of the world goes to Christian and Catholic. If I'm not mistaken there are more than 1.6 billion people follow Christian and Catholic. The rest goes to Islam, Buddha, Hindu, Shinto, etc. Uni Emirate Arab is one of the biggest country whose most of the citizen followed Islam. Buddha goes to Thailand and China, then Hindu goes to China. Japanese is known with it's legendary religion called Shinto.