By Duncan Clarke (Chairman of the Board, Global Pacific & Partners International Ltd)
By Stefano Liberti, Enda Flannelly
By William C. Van Norman
By Robin Law (University of Stirling)
By Clem Seecharan
By David Eltis
By Sylviane A. Diouf
By David Eltis (College Master, Algonquin College, Ontario, College Master, Ontario)
By David Eltis, James Walvin, Svend Green-Pederson
By Stephen G. Bunker
By Robert W. Harms
By Bayo Holsey
By Hertie School of Governance (Hertie School of Governance, Berlin, Germany)
By Robert Louis Stein
By Angus Maddison (, The late Emeritus Professor of Economic Growth and Development, University of Groningen)
By W. W. Rostow
By Lloyd G. Reynolds
By Paul Collier
By Jeffrey Herbst
By Deutsch
By Geoffrey Wheatcroft
By Chris Wickham (Professor of Medieval History, University of Oxford.)
By Daniel Waldenstroem
By Bonnie Campbell
By P. J. Marshall (Emeritus Professor of Imperial History, Emeritus Professor of Imperial History, University of London), Alaine Low, Wm. Roger Louis
By Tom Young
By Peter Brown
By Abdel-Fatau Musah, J. Kayode Fayemi
By Amanda Kay McVety (Assistant Professor of History, Assistant Professor of History, Miami University)