Complex sentence: Prior to 1990, the Crescent Club was the official pledge club of Phi Beta Sigma and potential candidates interested in becoming a member of the fraternity would join the pledge club before being fully initiated.
Split into simpler sentences: Prior to 1990, the Crescent Club was the official pledge club of Phi Beta Sigma. Potential candidates interested in becoming a member of the fraternity would join the pledge club before being fully initiated.