Islam, with 96 percent of the population following it.
Islam
It is the religion of Islam. The Muslim population is 1570 millions as of October 2009. refer to link below.
Major religion in India is Hinduism, about 80% of the population are Hindu. Major Religion in Bangladesh is Islam, about 70% of the population are Muslims. And the Major Religion in Pakistan is Islam, about 97% of the population are Muslims.
Well the majority of population are muslims so Islam.
Islam
The main religion in Syria is the Islam (Sunni) about 80% and then Christianity about 10% of the population
The main religion practiced in Algeria is Islam. About 98 percent of the population is Islam. There are also about 10,000 Christians that reside in Algeria.
About 5% of the population are Muslim.
The main religion in Egypt is Islam, with the majority of the population being Sunni Muslims. There is also a Christian minority, mainly Copts, who make up about 10% of the population.
Islam is a religion. The followers of Islam religion are called Muslims. Around 23% of world population are Muslims. Refer to the related question, listed below, for more information on Islam main principles.
The most popular religion in Afghanistan is Islam, with the majority of the population practicing Sunni Islam.