Answer:
The Byzantine Empire fell in 1453. The immediate cause of its fall was pressure by the Ottoman Turks. ... Ironically enough, the major cause of the decline of the Byzantine Empire (what made it weak enough to fall to the Ottomans) was the Crusades. The Crusades were supposed to be Christian wars against Muslims. Hope it helps. im in 7th and we just learned this last month!
Step-by-step explanation: