Unrest due to the Avignon Papacy and the Papal Schism in the Roman Catholic Church (1378–1416) sparked wars between princes, uprisings among peasants, and widespread concern over corruption in the Church. A new nationalism also challenged the relatively internationalist medieval world. The first of a series of disruptive and new perspectives came from John Wycliffe at Oxford University, then from Jan Hus at the University of Prague (Hus had been influenced by Wycliffe). The Catholic Church officially concluded debate over Hus' teachings at the Council of Constance (1414–1417). The conclave condemned Jan Hus, who was executed by burning in spite of a promise of safe-conduct. At the command of Pope Martin V, Wycliffe was exhumed and burned as a heretic twelve years after his burial.