Complex sentence: Because the group has been heavily involved in Three 6 Mafia productions, it has started careers for many rappers from Memphis, however the family has had several falling-outs with other rappers from the Memphis area.
Split into simpler sentences: Because the group has been heavily involved in Three 6 Mafia productions, it has started careers for many rappers. The family has had several falling-outs with other rappers from the Memphis area.