Home » Video – Historical signs behind the throne of Usman. Going forward, this became the flag of the Ottoman Empire.Video – Historical signs behind the throne of Usman. Going forward, this became the flag of the Ottoman Empire.by adminiApril 26, 2023Historical signs behind the throne of Usman. Going forward, this became the flag of the Ottoman Empire. Tags:EMPIREFlagHistoricalottomanSIGNSThroneusmanVideo