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The horseshoe style arches originated in Roman Spain around 2ndcentury AD and was used straight into Middle-Ages by Spaniards until Gregorian Reformation pushed Romanesque architecture.

As Averroes said, Arabs/Berbers were a crowd of brutish bedouin cultureless and historyless faggots prior to contact with Spain, Byzantium and Persia.

Picrel was a medieval Visigothic manuscript.