Turkey History Timeline: Key Dates and Events

This Turkey history timeline follows Anatolia across four millennia, from the ancient Hittite Empire and Byzantine Constantinople through the Turkic migrations and the Ottoman era to the founding of the modern Republic of Turkey in 1923.

Ancient Anatolia and Byzantine Constantinople

Anatolia, the peninsula that makes up most of modern Turkey, has been home to major civilizations for millennia. Around 1650 BCE, the Hittites built one of the great powers of the ancient Near East from their capital at Hattusa, developing a sophisticated legal and administrative system and, around 1259 BCE, concluding a peace treaty with Egypt that is among the earliest surviving written treaties in history. In the centuries that followed, Anatolia was home to a succession of civilizations, including the Phrygians, Lydians, and Greek colonial cities along its coasts, before falling under Persian, then Hellenistic, and eventually Roman control.

A turning point for the region came in 330 CE, when the Roman Emperor Constantine I founded the city of Constantinople on the site of the ancient Greek colony of Byzantium. Constantinople became the capital of the Eastern Roman Empire, commonly known as the Byzantine Empire, which preserved and adapted Roman law, Greek culture, and Christian tradition on Anatolian and Balkan soil for more than a thousand years after the Western Roman Empire’s collapse.

Turkic Migration and the Ottoman Rise

Anatolia’s transformation into a predominantly Turkish-speaking region began in 1071, when Seljuk Turkish forces decisively defeated a Byzantine army at the Battle of Manzikert. The victory opened Anatolia to large-scale settlement by Turkic peoples migrating from Central Asia, and over the following two centuries Turkish language, Islam, and new political structures gradually took root across the peninsula, even as Byzantine control persisted in parts of the west and along the coasts.

Out of this fragmented landscape of competing Turkish principalities, or beyliks, one small state in northwestern Anatolia rose to prominence. Around 1299, Osman I founded the beylik that bears his name, and his successors steadily expanded Ottoman territory across Anatolia and into the Balkans. The Ottoman ascent reached a defining milestone in 1453, when Sultan Mehmed II captured Constantinople, ending the Byzantine Empire after more than a thousand years and establishing the city, later renamed Istanbul, as the Ottoman capital. The Ottoman Empire went on to become one of history’s longest-lasting and most powerful states, though its broader imperial history across the Middle East, North Africa, and Europe is a story often told separately from Anatolia’s own history as a place.

The Founding of the Modern Republic of Turkey

The Ottoman Empire’s long decline accelerated through the nineteenth century and culminated in its defeat alongside the Central Powers in the First World War. In the aftermath, occupying Allied forces and an attempted partition of Anatolia provoked the Turkish War of Independence, led by military officer Mustafa Kemal, later given the surname Atatürk, meaning “Father of the Turks.” Turkish nationalist forces successfully repelled Greek, Armenian, and Allied incursions, and the Ottoman sultanate was formally abolished in 1922. On October 29, 1923, Atatürk proclaimed the Republic of Turkey and became its first president, launching a sweeping program of secularizing and modernizing reforms, including a new legal code, the adoption of the Latin alphabet, and women’s suffrage, that reshaped Anatolia’s political and cultural life for the century that followed.

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