Complex sentence: The Centralized Commonwealth Civic Club, formed in 1937, promoted community business, while two local Boy Scout troops (Troop 23, Troop 79) were explicitly for African American youth.
Split into simpler sentences: The Centralized Commonwealth Civic Club, formed in 1937, promoted community business. Two local Boy Scout troops (Troop 23, Troop 79) were founded for African-American youth.