Are a muslim people of mixed arab and berber stock coming from northwestern africa. they invaded spain and occupied it for 700 years.

These are the Mourus. From the year 711 the Iberian Peninsula witnesses one of its most important events: the Muslim invasion, responsible for a radical change in the economic, social and cultural panorama of what would later be Portugal and Spain.

The invaders actually constituted a mixed force consisting of Syrians, Egyptians, Persians and Berbers, that is, a joint force of the entire Islamic world at the time, which was in full expansion. Commanded by a Tarique, such forces cross the Strait of Gibraltar, and penetrate deeply into the Peninsula occupying it almost entirely about three years later.

the answer to your question is:

strong-mayor system

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