The Maghreb and the Subsahara are regions of Africa with different geographies.
It is as much Asia or Africa as New England.
I've never been to Europe, or Africa, or anywhere yet.
Crops native to Africa are not the staples of the world.
Although in late Tertiary times widely spread over southern Europe and India, giraffes are now confined to Africa south of the Sahara.
In Africa they were successful in expelling the garrisons placed in some of the coast towns by the Norman kings of Sicily.