The History of the Popes (Vol. XI) : From the Close of the Middle Ages chronicles the crucial pontificate of Pope Paul III, which lasted from 1534 to 1549. This volume details the crucial process leading up to the Council of Trent, the early stages of the Counter-Reformation, and the Church's complex geopolitical maneuvering amidst European power struggles. Specifically, it addresses conciliar issues (the intense diplomatic efforts, negotiations, and delays leading up to the Council of Trent between 1534 and 1539), church reform (the early reform commissions, the renewal of the College of Cardinals, and efforts to restore the Church's moral authority), and geopolitics and turmoil (the diplomatic response to the rise of Protestantism, including the Holy League, the war against the Turks, and the Congress of Nice (1538)). This comprehensive work spans 40 volumes, chronicling the reigns of 56 popes.