The Fall of Constantinople 1453 - Steven Runciman - Google Libri

https://books.google.de/books?id=CJz8BCdxlfEC&lpg=PP1&hl=it&pg=PA50#v=onepage&q&f=false

This classic account shows how the fall of Constantinople in May 1453, after a siege of several weeks, came as a bitter shock to Western Christendom. The city's plight had been neglected, and negligible help was sent in this crisis. To the Turks, victory…