The document discusses the Counter-Reformation and its connection to the Old St. Peter Basilica. It notes that the Old St. Peter Basilica needed funds to be built, which led to the selling of indulgences. The Counter-Reformation was a response by the Catholic Church to the Protestant Reformation and addressed issues like indulgences. It aimed to strengthen Church doctrine, condemn Protestant teachings, and define Church practices through decrees from the Council of Trent from 1545 to 1563. The Jesuits played a key role in the Counter-Reformation through their missionary work and spreading the Gospel.