Complex sentence: Malik originally hailed from the Makran District of southwestern Baluchistan province, and his success lead to the migration of other "Makrani" tribesmen-one of which, Ghazi Khan, founded the city of Dera Ghazi Khan further south.
Split into simpler sentences: Malik originally hailed from the Makran District of southwestern Baluchistan province. His success lead to the migration of other "Makrani" tribesmen--one of which, Ghazi Khan, founded the city of Dera Ghazi Khan further south.