It is highly probable that his influence would not have outlived him, if he had not found a lieutenant in `Abd-el-Mumin el Kumi, another Berber, from Algeria, who was undoubtedly a soldier and statesman of a high order.
When Ibn Tumart died in 1128 at the monastery or ribat which he had founded in the Atlas at Tinmal, after suffering a severe defeat by the Murabtis, `Abd-el-Mumin kept his death secret for two years, till his own influence was established.
Between 1130 and his death in 1163, `Abd-el-Mumin not only rooted out the Murabtis, but extended his power over all northern Africa as far as Egypt, becoming amir of Morocco in 1149.
Or "El Mansur" (1184-1199), the successors of Abd-el-Mumin, were both able men.
The amirs of the Muwahhadi Dynasty were as follows:- `Abd-el-Mumin 0145); Yusef II., "Abu Ya`kub" (1163); Ya`kub I., "Abu Yusef el Mansur" (1184); Mahommed III., "En-Nasir" (1199); Yusef III., "Abu Ya`kub el Mustansir" (1214); `Abd-el-Wahid, "El Makhluwi" (1223); `Abd-Allah II., "Abu Mahommed" (1224); Yahya V., "El Mu ` tasim" (1226); Idris III., "El Mamun" (1229); Rashid I., "`Abd-elWahid II."
Abd ul-Mumin, the Almohade conqueror of Tunisia, compelled many of the native Christians to embrace Islam, but when Tunis was captured by Charles V.
Even Moslem historians speak favourably of the Norman rule in Africa; but it was brought to an early end by the Almohade caliph Abd ul-Mumin, who took Mandia in 1160.
The mosque to which the tower belongs is a large brick building erected by `Abd el Mumin; the interior is adorned with marble pillars, and the whole of the crypt is occupied by a vast cistern excavated by Yakub el Mansur.