Algeria Burkino Faso Senegal Guinea Niger Mauritania Niger Nigeria
Kalahari Sahara Thar Namib
Britain Italy Spain France
Kayes Timbuktu Bamako Segou
Timbuktu Gao Djenne Bamako
1950 1980 1960 1970
1.34 million 134 million 134 000 13.4 million
Orange Niger Congo Nile