Complex sentence: The conversion to Shia form of Islam seem to have begun under the Safavid dynasty (1507--1721) of Persia/Iran, Faylis today are primarily Imami Shias like the Persians, kurds and the Azeris, as well as the majority of the Iraqi Arabs.
Split into simpler sentences: The conversion to the Shia form of Islam seems to have begun under the Safavid dynasty (1507--1721) of Persia/Iran. Feylis today are primarily Imami Shias like the Persians and the Azeris, as well as the majority of the Iraqi Arabs.