When the Fatimids moved their base to Egypt in 972, Ziri's son Buluggin ibn Ziri (971-984) was appointed viceroy of Ifriqiya. The removal of the fleet to Egypt made the retention of Kalbid Sicily impossible, while Algeria broke away under the governorship of Hammad ibn Buluggin, Buluggin's son.
Zirids 1000
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Algeria