Berber Revolt tax-collectors finally broke Berber patience. It is reported that following Ubayd Allah ibn al-Habhab's instructions to extract more revenues from the Berbers, Omar ibn al-Moradi, his deputy governor in Tangiers, decided to declare the Berbers in his jurisdiction a 'conquered people' and consequently set about seizing Berber property and enslaving persons, as per the rules of conquest, the 'caliphal fifth' was still owed to the Umayyad state (alternative accounts report he simply doubled their tribute). This was the last straw. Inspired by the Sufrite preachers, the North African Berber tribes of western Morocco - initially, the Ghomara, Berghwata and Miknasa
Proto-Berber language are the only Berber languages to preserve Proto-Berber *β as β; elsewhere in Berber it becomes "h" or disappears. The Proto-Berber consonantal system reconstructed by Allati (cf. Allati, 2002, 2011) is based on remains from the ancient stages of this language preserved in the ancient toponymical stratas, in Libyan inscriptions and in the modern Berber varieties. It had stops b, t, d, k, g; fricative s; nasal n and liquids l, r. The stops of the phonological system have evolved since the proto-Berber stage into variants from which other consonants have been progressively formed (Allati, 2002, 2011). Karl G. Prasse