In Dockworker Power: Race and Activism in Durban and San Francisco Bay Area, historian Peter Cole compares the union histories of two port cities, the militant struggles of dockworkers against racial discrimination, their response to technology (in the form of containerisation),
The title of A History of Borno, Trans-Saharan African Empire to Failing Nigerian State has two ambiguities. Situated in the Sahel, Borno did not span the Sahara. It was Trans-Saharan by being linked culturally and economically to the Mediterranean and the Red Sea, rather than to the Atlantic. Whether the failing state is Nigeria or Borno is also unclear.