Which medieval Christian dualist movement, centred in the Languedoc region, was brutally suppressed in the Albigensian Crusade (1209-1229)?

• A Waldensians
• B Bogomils
• C Hussites
• D Cathars (Albigensians) ✓

The Cathars rejected the material world as evil and were viewed as heretics by the Catholic Church; their stronghold at Montsegur fell in 1244.