Complex sentence: The ClubCorp network includes more than 150 golf and country clubs, business clubs, sports clubs, and alumni clubs in 25 states, the District of Columbia and two foreign countries that serve over 350,000 members, with more than 14,000 peak-season employees.
Split into simpler sentences: The ClubCorp network includes more than 150 golf and country clubs, business clubs, sports clubs, and alumni clubs that serve over 350,000 members. Located in 25 states, the District of Columbia and two foreign countries, the company and the clubs in its network employ more than 14,000 peak-season employees.