Question

Which development is most closely associated with the fall of the Byzantine Empire?

Answer 1

Answer: attacks from European Crusaders, Arabs, and Turks

Answer 2

Answer: territorial expansion and growth of Ottoman empire (Seljuc Turks) during the following centuries ....especially in Europe (the Balcans). Ottoman Empire (Islam) expanded northward ...territory of today´s Bulgaria, Greece, Albania, Serbia etc.

Explanation: this expansion got its peak in 1683 (siege of Vienna).