Which pope presided over the Fourth Lateran Council and declared a crusade against the Albigensians?

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The Fourth Lateran Council was held under the papacy of Innocent III, who also declared a crusade against the Albigensians (a heretical group in southern France) known as the Albigensian Crusade. Gregory VII was a reformer of the 11th century who is known for his conflicts with Holy Roman Emperor Henry IV. Boniface VIII was a 13th century pope known for his conflict with King Philip IV of France over the power of the papacy. Urban II was the pope who called for the First Crusade in 1095.

Which Pope Presided Over the Fourth Lateran Council and Declared