The Final Act in the Fall of the Byzantine Empire

Multiple Choice

The final act in the fall of the Byzantine Empire was

A) the capture of Constantinople by the Ottoman Turks.
B) the capture of Constantinople by the crusading forces of France.
C) Constantinople's annexation to Russia.
D) a claim made by the pope that Constantinople would henceforth be his personal property.
E) utter annihilation on the battlefield by the Persian Empire.