What was happening when Baghdad was founded?
Baghdad was founded in 762, but the map around it was full of revolt, frontier war, and a Byzantine debate over religious images.
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Baghdad was founded in 762 CE by the Abbasid caliph al-Mansur, built as a round city on the Tigris to anchor a dynasty that had only recently taken power. That context is visible on this map. Just before the founding, the Abbasids had defeated the Umayyads at the Battle of the Zab in 750, and the years that followed were not calm. The Uprising of Abd Allah ibn Ali in 754 and the Alid revolt of 762–763 show that the new caliphate spent its first decade putting down challenges even as it laid out its capital. A young dynasty was building a city and fighting for legitimacy at the same time.
The wider region was just as restless. The Mount Lebanon revolts of 752 and 759 appear within this frame, and the Battle of Talas in 751 — fought far to the northeast against Tang China — marked the Abbasids' reach deep into Central Asia in the very years Baghdad was being planned. The new capital sat at the centre of a span of territory that was anything but settled.
To the northwest, the Byzantine Empire was absorbed in a very different struggle. The Council of Hieria in 754 had formally backed the rejection of religious icons, and decades later the Second Council of Nicaea in 787 reversed that position and restored icon veneration. Between those two councils lay frontier fighting with the Abbasids, including the Battle of Anchialus in 763. Set Baghdad's founding beside these events and a single year stops being a fact in isolation — it becomes a snapshot of several worlds in motion.
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Events from Wikipedia/Wikidata (CC-BY-SA); boundaries from OpenHistoricalMap (ODbL). Spotted a mistake? Email [email protected].