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In page Omar al-Mukhtar:

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Mukhtar developed a strong relationship with the Senussid Movement during his years in Jaghbub, in 1895, Al-Mahdi Senoussi traveled with him south to Kufra, and on another occasion further south to Karo in Chad, where he was appointed as sheikh of Zawiyat Ayn Kalk, when the Colonial French advanced on Chad in 1899 he was sent among other Senussites to help defend from the invaders, as the Senussi considered their expansion dangerous for their Missionary activity in Central and West Africa. In 1902, Omar was recalled north after the death of Al-Mahdi, the new Senussi leader Ahmed Sharif as-Senussi appointed him as Sheikh of the troubled Zawiyat Laqsur in Northern Cyrenaica.