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The Siege of Damascus (634) lasted from 21 August to 19 September 634 AD b[âº] before the city fell to the Rashidun Caliphate. Damascus was the first major city of the Byzantine (Roman) empire to fall in the Muslim conquest of Syria.
The siege lasted from Friday, 6 April 1453 until 29 May 1453 Tuesday when the city was conquered by the Ottomans under the command of Sultan II. Mehmed. A new era started on the world and a new balance came through by the conquest of Constantinople.