sentences:  According to The World Factbook Sunni Muslims constitute between 84.7 - 89.7% of the population, and Shia Muslims between 10 - 15%.0.3% do not follow Islam.The religion Zoroastrianism is believed by some to have originated in what is now Afghanistan between 1800 and 800 BCE, as its founder Zoroaster is thought to have lived and died in Balkh while the region at the time was referred to as Ariana.