Islam in India began in the 11th century. Islam came to India mainly from Asia. The most famous preacher of Islam in India was Khwaja Chishti. He arrived from Iran and his sect is called Sufism. The process of converting Indians to Islam began in the 8th century, when the Arabs began invading north India and present day Pakistan. Most of the Indian Muslims which converted to Islam, belonged to the lower classes of the Indian society.