border territory in the Kingdom of the Franks
The Spanish March and surrounding regions.
The Spanish March or Hispanic March was a march or military buffer zone established after the failed Umayyad invasion of Francia. It was established in c. 795 by Charlemagne in the eastern Pyrenees and nearby areas, to protect the new territories of the Christian Carolingian Empire—the Duchy of Gascony, the Duchy of Aquitaine, and Septimania—from the Muslim Umayyad Emirate of Córdoba in al-Andalus.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).