Popes have long been wary of Church Councils, seeing them as possible rivals to their claim to absolute authority. When the Council of Constance met in 1414, there were three contending popes, each elected by a set of cardinals, and each with political support across Europe. At its end, two had been deposed, and the third, Gregory XII, having been recognised as pope, agreed to resign. A commission of Cardinals and others appointed by the Council then elected a new pope, Martin V, in 1417. Constance also decreed that the pope was to convene councils on a regular basis. Martin conformed for a time, but the practice soon fell away. Popes have preferred to govern alone, with the help of the Roman Curia.
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