Question: when did the ottoman empire take over the byzantine empire
Answer: The Fall of Constantinople ( Greek : Ἅλωσις τῆς Κωνσταντινουπόλεως , Halōsis tēs Kōnstantinoupoleōs ; Turkish : İstanbul'un Fethi Conquest of Istanbul ) was the capture of the capital of the Byzantine Empire by an invading army of the Ottoman Empire on 29 May 1453 .