The millet system
The Ottoman Empire at its height governed populations speaking dozens of languages and practicing Islam, Eastern Orthodoxy, Catholicism, Judaism, and more. The millet system (millet meaning nation or community) granted non-Muslim communities self-governance in religious, educational, and civil matters. Jews expelled from Spain in 1492 were welcomed by the Sultan. This was not liberal multiculturalism — it was pragmatic imperial administration.
The devshirme and the Janissaries
The Janissary corps — the empire's elite soldiers and later its political kingmakers — were formed through devshirme: the systematic levy of Christian boys from Balkan villages, converted to Islam, raised in the palace system, and trained as soldiers and administrators. Many rose to the highest offices. Grand Vizier Sokollu Mehmed Pasha, who served three sultans and essentially ran the empire for 15 years, was taken as a Serbian child of seven.
The Topkapi Palace as administrative system
Topkapi Palace was not merely a residence but the nerve center of a bureaucratic empire. The palace school trained the empire's most talented recruits in language, religion, law, and statecraft. It was more meritocratic than most contemporary European systems — advancement depended on ability, not birth — though within a framework of total personal submission to the Sultan.