By Ralph A Austen (Professor Emeritus of African History, Professor Emeritus of African History, University of Chicago)
By Robert Hannah
By Akinwumi Ogundiran
By J. D. Y. Peel
By Tony Chafer
By J. H. Elliott
By John Hunwick
By Nicholas Ostler
By Said S. Samatar
By Harald Kleinschmidt
By Cullen Murphy
By Ian Fowler, David Zeitlyn
By David Robinson
By Marvine Howe
By Assistant Professor of History James T Campbell (Northwestern University)
By Grenouilleau, Olivier
By Tom Young
By Hey, David
By Robin Law (University of Stirling)
By Piero Gleijeses
By Richard Saull
By Robert Adams, Charles Adams (University of Arkansas)
By Brian Brivati, Julia Buxton, Anthony Seldon
By Frederick Cooper (New York University)
By Suzanne Miers, Igor Kopytoff
By Efraim Karsh, Inari Karsh
By Glenford Deroy Howe
By Malyn Newitt (, Emeritus Professor, King's College London)