The countries of the Maghreb?
All of these:
are concentrated in northwesternmost Africa
derive their sustenance from the slopes and life-giving rains drawn from the Atlas Mountains
were all drawn into the French colonial sphere
are Morocco, Algeria, and Tunisia
Maghreb means west. The countries of the Maghreb region of Northwest Africa (which is sometimes called Maghrib)are Tunisia, Algeria, Morocco, Libya, and Mauritania. Traditionally the geographical region included only Morocco, Algeria, Tunisia, and Libya. The Arab Mahgreb Union of 1989 included Mauritania in the economic group.