“Daura * Zaria * Biram * Kano * Katsina * Rano * Gobir
These are the seven cities of the Hausa people of Central West Africa whose historic territory extends across Nigeria, Niger, and several other modern nations.”
Excerpted from: Rogerson, Barnaby. Rogerson’s Book of Numbers: The Culture of Numbers–from 1,001 Nights to the Seven Wonders of the World. New York: Picador, 2013.