Complex sentence: Kamathipura (also spelled Kamthipura) (Marathi: कामाठीपुरा) is Mumbai's oldest and the Asia's largest red-light district, established in 18th century, which in 1880s turned into a "comfort zone" for British troops, during British Raj.
Split into simpler sentences: Kamathipura (also spelled Kamthipura) (Marathi: कामाठीपुरा) is Mumbai's oldest and the Asia's largest red-light district. Then in 1880s it turned into a "comfort zone" for British troops, during British Raj.