Millet System
The Ottoman method of ruling a multi-religious empire by organizing subjects into self-governing faith communities, tolerant by its age yet fatally divisive.
The Ottoman Empire ruled tens of millions of Christians and Jews for six centuries without trying to make them Muslims or Turks, and the millet system is how it managed the trick. The Ottomans organized their subjects not by ethnicity or territory but by faith. Each recognized religious community, or millet, governed its own internal life: its courts, schools, charities, and clergy. In exchange, it gave the sultan loyalty and taxes. It was tolerance as statecraft, not as principle, and by the standards of its age it was remarkably successful.
Rule by religious community
After conquering Constantinople in 1453, Mehmed II installed a Greek Orthodox patriarch as leader and tax-collector for all the empire's Orthodox Christians, folding Greeks, Serbs, Bulgarians, Romanians, and Arabs into a single Rum (Roman) millet regardless of language. Separate millets recognized the Armenians and the Jews, each under its own religious head. Within its sphere, a millet ran family and religious law, married and divorced its own people, schooled its children, and collected its community's dues. The state stayed out, as long as the taxes came in and order held.
That autonomy sat on top of an older Islamic framework. Non-Muslims were dhimmi, protected but subordinate: they paid a special poll tax, the jizya, faced limits on dress, building, and testimony in court, and stood legally beneath their Muslim neighbors. The deal was security and self-rule in return for a lower rung and a tax bill.
Tolerant by the standards of its age
Measured against contemporary Europe, the bargain was generous. In 1492, when Spain expelled its Jews, Sultan Bayezid II sent ships to carry them to Ottoman lands, and Sephardi communities flourished in Salonica and Istanbul for centuries. While much of Europe burned heretics and fought religious wars, the Ottomans let a Jewish rabbi, an Armenian patriarch, and an Orthodox bishop each run his own flock. It was not equality, and periodic abuses and heavier taxes were real, but for a Jew or a Christian choosing where to live in 1550, the sultan's domains were often the safer bet.
Why it broke
The system's fatal flaw was the one that made it work: it preserved communal identity instead of dissolving it. For centuries that was a strength. Then, in the 19th century, European nationalism arrived and turned religious communities into proto-nations. The Greeks, Serbs, Bulgarians, and Armenians who had lived as millets began to see themselves as peoples owed states of their own, and the same lines the Ottomans had drawn to govern their diversity became the fault lines along which the empire cracked apart. The Tanzimat reforms of 1839 to 1876 tried to replace the millet bargain with equal citizenship, and arrived too late to stop the process. The institution that let an empire hold a hundred peoples together for six hundred years also drew the map of how it would come apart.