Question: when was the ottoman empire founded and when did it end
Answer: 1299 -- 1922 / 1923 Flag ( 1844 -- 1922 ) Coat of arms ( 1882 design ) Motto دولت ابد مدت ‎ Devlet - i Ebed - müddet `` The Eternal State '' Anthem ( various ) ( during 1808 -- 1922 ) The Ottoman Empire at its greatest extent in Europe , under Sultan Mehmed IV in late 17th century .