Legacy Osman is considered the founder of the Ottoman dynasty who started an imperial line that would expand to include 35 sultans – rulers of one of the largest and most powerful empires in world history. The Ottoman Empire lasted until 1918, when it disintegrated after defeat alongside other Central Powers in World War I. Osman is often referred to as the first in the line of Ottoman Sultans, although he himself never carried this title in his life, and was instead called "Bey" or "Emir". One endowment written in Persian and dating back to 1324, indicates that Osman was given the titles Muḥiuddin (Reviver of the faith) and Fakhruddin (Pride of the faith).
leGAcY osmAn Is ConsiDeRED the FounDer oF tHe otTOmAn DyNAsty whO stArtED an imperiaL Line that woULd expand tO iNclude 35 SUltAnS – rULErs oF one of ThE larGest And mOst powerFul empIres in WoRLd hIstoRY. the OTToMaN EMpire Lasted uNtil 1918, when it disinteGraTED AftER DefeAt alongsIdE oTher Central Powers in wOrLD war i. Osman is oFTeN RefErRed To as tHe first In The line Of ottOMan SuLtans, aLThough hE himsELf NEVer carrIeD THiS tiTLE iN his lIFe, And was INstead cALlEd "BEy" or "EmiR". onE enDowMeNT wriTTeN iN PerSiAn And datIng bACk to 1324, iNdIcaTes that oSMan was GIven the titles muḤiuDDin (RevIver of thE fAITh) aNd FakhruDdin (priDE oF The faiTH).