Most of the candidates in this batch were low-effort Shorts, hashtag-spam intros, or single-sentence "mistake that changed history" clickbait. This one stands out as a full-length documentary on a genuinely under-taught chapter of European history.

From 711 to 1492 CE, Moorish dynasties ruled large parts of the Iberian peninsula — what is now Spain and Portugal — for roughly seven centuries. During that period, Al-Andalus became one of the most advanced societies in the medieval world: cities like Córdoba had street lighting, public baths, and libraries holding hundreds of thousands of manuscripts at a time when most of Christian Europe was still rural and largely illiterate.

A good documentary on this topic should cover the conquest under Tariq ibn Ziyad, the cultural flowering under the Umayyad Caliphate of Córdoba, the translation movement that preserved Greek and Roman texts (later feeding the European Renaissance), advances in algebra, optics, agriculture (citrus, sugar, irrigation), and architecture (the Alhambra, the Mezquita), and finally the Reconquista and the 1492 expulsions that reshaped the peninsula's identity.

Caveat: the title's "Europe tried to erase" framing leans sensational, so watch with a critical eye — but the underlying history is real, well-documented, and worth knowing.