Complex sentence: As the Greek system expanded and incorporated many other societies, Seal and Serpent maintained its independence as a member of Cornell's Interfraternity Council (IFC) which oversees the university's entire fraternity system.
Split into simpler sentences: As the Greek system expanded and incorporated many other societies, Seal and Serpent maintained its independence. It is a member of Cornell's Interfraternity Council (IFC) which oversees the university's entire fraternity system.