Quamvis ad amplianda is a papal bull issued by Pope Alexander VI on 1 June 1500 calling for a crusade against the Ottoman Empire in response to Ottoman invasions of Venetian territories in Greece. ^{[1] [2]} After requests for funds and military support from the Imperial Diet of the Holy Roman Empire were rejected, a universal tithe was instituted with the bull. ^[3]

References

Sources

• Francisco, Adam S. (2007). Martin Luther and Islam: A Study in Sixteenth-Century Polemics and Apologetics. Brill.
• Nowakowska, Natalia (2004). "Poland and the Crusade in the Reign of King Jan Olbracht, 1492–1501". In Housley, Norman (ed.). Crusading in the Fifteenth Century: Message and Impact. Palgrave Macmillan.
• Setton, Kenneth Meyer (1976). The Papacy and the Levant, 1204–1571. American Philosophical Society. ISBN   9780871691149.