File:Zirid control circa 980 (version 3).png

English: Extent of Zirid authority circa 980, after the largest gains made by Buluggin ibn Ziri. Note that many of the Zirid and Umayyad territories shown here were only held temporarily, as the political situation in the western Maghreb constantly changed during the 10th century,

Source: Sluglett, Peter & Currie, Andrew (2014). "Atlas of Islamic History" pp. 26 (Map 10) [1]

Notes:

1) Two maps in the source with different eastern border: Note that in the source above, another map, Map 11 on p. 28, shows Zirid territory extending up to Cyrenaica, whereas map 10 doesn't. The authors do not explain this difference explicitly. However, other text sources indicate that Buluggin ibn Ziri was given control of Tripolitania in 978 (see, among others, Abun-Nasr, Jamil (1987). "A history of the Maghrib in the Islamic period", p. 67) and some sources indicate that he also would have controlled cities as far as Ajdabiya:

• Fehérvári, Géza (2002). "Excavations at Surt (Medinat Al-Sultan) Between 1977 and 1981", p. 17 [2]
• Idris, Hady R. and Halm, Heinz (2011), "Buluggīn b. Zīrī", in Fleet, Kate; Krämer, Gudrun; Matringe, Denis; Nawas, John; Rowson, Everett (eds.). "Encyclopaedia of Islam, Three", ISBN 9789004161658.
• Bramoullé, David (2019), "Les Fatimides et la mer (909-1171)", p.239 [3]
• Additionally, another published map appears to show indirect Fatimid authority circa 1000 as applying to the exact same areas of Cyrenaica (and therefore presumably under Zirid control, given the context), see: Bramoullé, David (2018), "Itinerant Objects in the Fatimid World: From Cairo to al-Andalus to Sicily and Back" Melikian-Chirvani, Assadullah Souren, (ed.), "The World of the Fatimids", p. 247

However, the map in this file only shows the territories indicated in Map 10 of the cited atlas. Other versions of this file (versions 1 and 2) have been uploaded which show the eastern Zirid border as being what Map 11 of the cited atlas indicates.

2) Modifications to western border to reflect details from other reliable sources: At least two reliable sources state that Buluggin's 980 campaign captured Sijilmasa, Fez, and Basra (al-Hamra), the latter being a northern town (south of present-day Ksar el-Kebir):

• Idris, Hady R. and Halm, Heinz (2011), "Buluggīn b. Zīrī", in Fleet, Kate; Krämer, Gudrun; Matringe, Denis; Nawas, John; Rowson, Everett (eds.). "Encyclopaedia of Islam, Three", ISBN 9789004161658.
• Bennison, Amira K. (2012), in Akyeampong, Emmanuel Kwaku and Gates, Henry Louis (eds.), "Dictionary of African Biography", p. 9 [4]

Note that this version of the map does not take into account the Zirid capture of Basra stated in these sources, and instead it only follows the borders shown by the relevant Sluglett and Currie atlas map. Another version of this map (version 2) includes an adjustment to Zirid territory to approximately show the possession of Basra.