 Complete the following phrase:  The highpoint of the Sanusi influence came in the 1880s under the Grand Senussis son, Muhammad al-Mahdi as-Senussi, who was a skilled administrator and a charismatic orator. With 146 lodges spanning the entire Sahara, he moved the Senussi capital to Kufra. Harsh Ottoman rule only fuelled the appeal of the Senussi Movements call to repel foreign occupation. Remarkably, Mohammed al-Mahdi succeeded where so many had failed before him, securing the enduring loyalty of the Amazigh tribes of Cyrenaica. Over a 75year period, the Ottoman Turks provided 33 governors and Libya remained part of the empirealthough at times virtually autonomousuntil Italy 