Original: August & ndash; The final Cathar stronghold in southern France falls, eliminating their last refuge since the Roman Catholic Church began the Albigensian Crusade to crush the sect in 1209.
Simplified: August - The final Cathar stronghold in southern France falls, eliminating the last refuge of the heretical Cathars after the Roman Catholic Church engaged in a program to crush the sect, starting in 1209 with the Albigensian Crusade.