Foundation and First Mentions
The territory of modern Erzurum has been inhabited since deep antiquity, but its history as a fortified urban centre began in the classical era. Initially, the settlement was known as Karin. A decisive moment in its destiny was the 5th century AD (around 415–420), when the Byzantine Emperor Theodosius II, realising the vulnerability of the eastern borders, ordered the construction of powerful fortifications here. The city was renamed Theodosiopolis and became the empire's main military bastion in the region for centuries.
Key Factors of Development
The formation of the city as a significant node on the regional map was determined by three main circumstances:
- Geographical Location: Situated on a high mountain plateau (almost 2,000 metres above sea level), the city controlled vital mountain passes. This made it the natural "key" to Anatolia for any conquerors coming from the East.
- Political Role: As a border outpost, the city was constantly the focus of rulers—first Rome and Byzantium, and later the Arab Caliphate and Turkish beyliks. Power over it meant control over the entire region.
- Transit Trade: Branches of the Great Silk Road and routes connecting the Black Sea with Persia passed through the city. This ensured a constant influx of goods, wealth, and travellers, despite frequent wars.
Early Cultural and Economic Features
In the early period, the city's economy had a militarised character: blacksmithing, weapon workshops, and garrison services flourished here. However, thanks to trade, the city quickly became a melting pot of cultures. Traditions of the local population, Byzantine influence, and later, Islamic art mixed here. This synthesis laid the foundation for a unique architectural style that flourished in the territory of modern Turkey during the Seljuk era, transforming a stern fortress into a centre of science and stone architecture.