Islam constitute the world's second largest religious group. In 2015, Islam has 1.8 billion adherents, making up about 24% of the world population. Islam is the dominant religion in the Central Asia, Indonesia, Middle East, South Asia, North Africa, the Sahel and some other parts of Asia.The diverse Asia-Pacific region contains the highest number of Muslims in the world, easily surpassing the Middle East and North Africa. About 31% of all Muslims are of South Asian origin, therefore South Asia contains the largest population of Muslims in the world. Muslims are a majority in Pakistan and Bangladesh