On 14 September 1509 , Constantinople was devastated by an earthquake . During Bayezid II 's final years , a succession battle developed between his sons Selim I and Ahmet . Ahmet unexpectedly captured Karaman , an Ottoman city , and began marching to Constantinople to exploit his triumph . Fearing for his safety , Selim staged a revolt in Thrace but was defeated by Bayezid and forced to flee back to the Crimean Peninsula . Bayezid II developed fears that Ahmet might in turn kill him to gain the throne , so he refused to allow his son to enter Constantinople
devastated by an earthquake
1509 Constantinople earthquake
Bayezid II