Knut S. Vikør's The Oasis of Salt: The History of Kawar, a Saharan Centre of Salt Production is required reading for anyone interested in the history of Kawar and Kanem-Borno. While suffering from a number of typos, this book actually surpasses the incomplete history of Kawar written by Marguerite Le Coeur. Unlike her work, Vikør reaches more level-headed conclusions and theories while also challenging Lovejoy on the economic and political dimensions of Kawar and the salt trade (slavery was marginal to salt production). Of course, as its focus is on Kawar, Kanem and Borno only appear in references to the Kanuri population of the region or in periods when direct authority of Kanem-Borno in the region was attested by various sources. Thus, Kawar is the center of this history, showing how a periperhal central Saharan oasis (and nearby Fachi and Jado) could be significant in the Sudanic salt trade as well as trans-Saharan contact. Kawar as a center-periphery is a key theme here, shifting in its reception of varying cultural influences based on the power dynamics of the Central Sudan and Sahara.
Vikør begins the study with an overview of Kawar, the geography, the relevant populations and the method of salt production. This precedes the second half of the book's chronological analysis, but is very helpful for contextualizing Kawar, Fachi and Jado. Then, the rest of the history analyzes Kawar from the time of Herodotus and the ancient Garamantes to the French colonial conquest. Le Coeur's earlier published history covers the same era, but does not rely on questionable assumptions (Le Coeur believed the Tomagra and Kaye were "Berbers"). In fact, Oasis of Salt is a very careful reading of Kawar's history based on our limited sources. Thus, moving from Herodotus and references to the Garamantes in the south from the Roman era, Vikør endeavors to cautiously interpret the various medieval Arabic sources from the 9th century to the late 14th. Moreover, for those able to read Arabic, an appendix includes the original texts with Vikør's translations. Needless to say, his interpretation of some of these Arabic sources is nuanced enough to give a more accurate impression of Kawar from the 7th century onwards.
While we may never the full historicity of Uqba b. Nafi's "conquest" of Kawar or what exactly the famous alun of Kawar actually was, it becomes clear that Kawar was probably known or at least heard of by the Garamantes and probably an entrepot for trans-Saharan trade by the 9th century. The references to Kanem and Zaghawa or Zaghawi captives certainly suggests the Ibadi trade network had penetrated Kawar and likely introduced Islam into the region. This early Ibadi influence and links to the Fezzan are the reasons Vikør sees early Kawar as falling more into a Maghrebi or North African sphere of influence (exemplified in the ancient Arabic place names and the gassars, which seem to owe more to Kanuri or Sudanic influences but use an Arabic term), later shifting to predominantly "Sudanic" with the assertion of Kanem's control or interests by the 12th century. With the rise of Kanem (even under mai Arku, hints of Kanem's influence in Kawar and ties to the Tomagra and Dirku suggest early links), Sudanic civilization exerted its influence to a greater extent in Kawar and even the Fezzan. Then, despite the decline of Kanem by the late 1300s, the Bornoan state under the Sayfawas reasserted their claims to Kawar. To what extent Arku, Dunama, Ali Gaji, Idris Alooma, or other mais of Kanem-Borno were ever able to exert strong authority over Kawar is unclear, but surviving Borno mahrams and the Diwan suggest familial, tax exemptions, marital, and military strategies.
However, unlike Lovejoy, Vikør does not seem to see Borno's interest in Kawar as being connected to the trade in salt in the Sudan. Instead, Borno was more interested in securing Kawar for trans-Saharan trade to Tripoli, via the Fezzan. Of course, it is hard to imagine Borno not trying to take advantage of Kawar's salt production, as the Koyam were said to have been involved in it and perhaps the Bornoan state added Kawar's salt exports to local natron production in Manga and near Lake Chad to supplement their trade with Hausaland and beyond. In other words, even if trans-Saharan trade and the Kawar salt caravans usually operated independently, it is difficult to imagine Borno not actively promoting Kawar's salt trade. This does not exclude the possibility of Tuareg caravans carrying salt from Kawar to Hausaland, which the Kano Chronicle may suggest was occurring by the mid-15th century. Indeed, the ensuing conflict between the Tuareg of Ayar and Borno in the late 17th century and 18th century, even if it was often small-scale raids in Kawar, does suggest Borno's interest in Kawar were important for security of trans-Saharan trade but perhaps the profitable salt trade, too. Indeed, Tuareg incursions on the borders of northern Borno plus Tuareg settlements of enslaved farmers in Damergu must have been seen as as combined threat to Kawar and Borno's direct borders. The Koyam must have been threatened too, by the rising importance of Tuareg, specifically Kel Owey salt caravans to Fachi and Kawar.
Overall, this is mandatory reading for anyone interested in Kawar, Kanem-Borno, or the Central Sudan. While there are some arguments of the author we disagree with or find implausible or lacking adequate backing, Oasis of Salt is so far the best read on Kawar's history. Lovejoy's work is on the larger Central Sudan and should be read in conjunction, and Le Coeur's work, based on field experience and exposure to the Teda of Kawar and Tibetsi, should likewise be added to one's list. Taken together, the three provide a great overview and list of sources on Kawar's historic importance and role as a bridge between Kanem-Borno and the Mediterranean. We disagree with the author about the Kanuri of Kawar being the remnants of an original proto-Kanuri population that once lived further north, but he's likely right about the population always being, mostly, Sudanic. We would like a bit more details on the clan systems of the Teda and Kanuri before accepting his theory, though it does seem that early Kawar's population was closely related to the Kanembu and Kanuri. In addition, he's almost certainly correct about the Zaghawa/Banu Duku to Sayfawa "dynastic" change, too. It is far more likely that the Sayfawa dynasty and "Zaghawa" represented two local lineages rather than Hume being a Berber outsider. But based on our limited sources, Vikør does not agree with Lange that there definitely was a shift in dynasties from pre-Islamic Kanem to the Sayfawa. In light of his generally careful scholarship and useful references and translations, this is an enlightening history of a Saharan region whose entire existence is predicated on trade.