A program of sweeping state reform in the Ottoman Empire between 1839 and 1876, aimed at centralizing the government, modernizing the army, law, taxation, and schooling, and binding a vast multi-religious population together by promising every subject equal protection. Opened by the Gulhane Edict of 1839 and extended by the 1856 Reform Edict, the Tanzimat reshaped the Ottoman state, unsettled the old Muslim-dominant order, and ended in the empire's first constitution in 1876.
In November 1839, a young official stood in the rose garden of the Topkapi Palace and read a decree aloud to assembled ministers, foreign diplomats, and a crowd of onlookers. The document promised something the Ottoman Empire had never formally guaranteed: that the life, honor, and property of every subject — Muslim, Christian, or Jew — would be protected by law. The sultan himself swore to obey it. For an empire that had ruled for centuries on the principle that the sultan's authority stood above any binding institutional check and that Muslims held recognized precedence over non-Muslims, this was an extraordinary turn. The reforms that followed tried to rebuild the state from the ground up. They also opened a question the empire could never fully answer: could equality on paper hold together a realm that had always been organized around difference?