By 1800 Ottoman leaders knew they faced a problem their predecessors had not: European states were pulling ahead in military power, finance and administration, and the gap was widening. The nineteenth century became an age of reform from above, carried out under heavy pressure from outside and from below. It is one of the most important experiments of its kind, and its successes and failures still shape the region.

Clearing the way

Selim III, who reigned from 1789 to 1807, created a new army trained and equipped on European lines. The Nizam-ı Cedid, the "New Order," was Selim III's new European-style army. The Janissaries saw it as a threat to their privileges, and in 1807 a revolt deposed Selim, who was killed the following year. His cousin Mahmud II learned the lesson and moved carefully. He built up loyal forces for years, then provoked the showdown. In 1826 Mahmud II abolished the Janissaries after crushing their revolt, shelling their barracks and killing thousands. Ottoman sources called it the Auspicious Incident. With the old corps gone, Mahmud built new ministries, a modern army and a postal service, and in 1829 replaced the turban with the fez for officials.

Nations against empire

The same decades brought a new idea to the Balkans: that each people defined by language, faith and history deserved its own state. Serbia won autonomy after revolts in 1804 and 1815. In 1821 Greeks rose in revolt. The war was brutal on both sides, with massacres of Muslims in the Morea and of Greeks on the island of Chios. European opinion, inspired by classical Greece, favored the rebels, and in 1827 a combined fleet destroyed the Ottoman and Egyptian navy at Navarino. Greece won its independence by 1830, with help from Britain, France and Russia. Meanwhile Muhammad Ali, the Ottoman governor of Egypt, built his own modern army and in the 1830s invaded Syria and defeated the sultan's forces, showing that danger could come from inside the empire too.

The Tanzimat

In 1839 the young sultan Abdülmecid issued a decree drafted by the reforming statesman Mustafa Reşid Pasha. The Gülhane edict of 1839 opened the Tanzimat, promising security of life, honor and property to all subjects, along with fair taxes and regular conscription. Tanzimat means "reorganization," and the period lasted until 1876. New courts, schools, provincial councils and law codes followed. After the Crimean War of 1853 to 1856, in which Britain and France fought alongside the Ottomans against Russia, a second decree went further. The Reform Edict of 1856 declared the equality of Muslim and non-Muslim subjects, and the jizya was abolished, replaced by a tax for exemption from military service. Around the same time, the Russian Tsar Nicholas I is reported to have called the empire a very sick man, a phrase that became "the sick man of Europe."

Debt, a constitution and an autocrat

Reform cost money. The empire borrowed heavily from European banks from 1854 and in 1875 could not pay. After the 1875 default, European creditors took control of key Ottoman revenues through the Ottoman Public Debt Administration, set up in 1881. In 1876, amid war in the Balkans, reformers led by Midhat Pasha persuaded the new sultan Abdülhamid II to grant a constitution, and an elected parliament met in 1877. It did not last. Abdülhamid II suspended the parliament in 1878 and ruled as an autocrat for three decades. That same year the Congress of Berlin recognized the independence of Serbia, Montenegro and Romania. Abdülhamid modernized in his own way, building railways, telegraph lines and schools, while stressing his role as caliph of all Muslims and ruling through censorship and spies. His reign also saw the massacres of 1894 to 1896, in which tens of thousands of Armenians, by many estimates far more, were killed.

Opposition grew among officers and students known as the Young Turks, organized in the Committee of Union and Progress. In 1908 the Young Turk revolution forced Abdülhamid to restore the constitution, and the streets filled with Muslims, Christians and Jews celebrating together.

Worked example: what did equality mean in 1856?

The Reform Edict promised something remarkable for its time: that Muslim and non-Muslim subjects would be equal before the law. To weigh it, ask who wanted it, who gained and who resisted. Reformers wanted it because they hoped a shared Ottoman citizenship would keep Christians loyal and remove excuses for European meddling. Britain and France pressed for it as allies. Many non-Muslims gained real protections and opportunities, and Christian and Jewish merchants prospered.

But resistance came from several sides. Many Muslims resented losing their superior status, and in 1860 a massacre of Christians in Damascus showed how violent that resentment could become. Some Christian religious leaders disliked reforms that weakened their own authority over their communities. And nationalists did not want equality inside the empire; they wanted to leave it. The lesson is sobering: declaring equal dignity in law was a genuine advance, but it could not by itself overcome a society built on ranked communities, especially when outside powers and inside movements had their own goals.