Complex sentence: In 1487, he confirmed Tomas de Torquemada as grand inquisitor of Spain; he was a strong supporter of the Spanish Inquisition; he also urged a crusade against the Waldensians, offering plenary indulgence to all who should engage in it.
Split into simpler sentences: In 1487, he confirmed Tomas de Torquemada as grand inquisitor of Spain. He also urged a crusade against the Waldensians, offering plenary indulgence to all who should engage in it.