Complex sentence: He sold securities in the New Jersey and Philadelphia area, and in the 1980s, after his 13-year-old daughter died in a house fire, developed a dependence on drugs, ending up living in a homeless shelter.
Split into simpler sentences: He sold securities in the New Jersey and Philadelphia area. In the 1980s, after his 13-year-old daughter died in a house fire, he developed a drug habit and ending up living in a homeless shelter.