Sudan (region) to the present-day country of Sudan, the western part of which forms part of the larger region, and from which South Sudan gained its independence in 2011. The Sudan region extends in some 5,000 km in a band several hundred kilometers wide across Africa. It stretches from the border of Senegal, through southern Mali (formerly known as French Sudan when it was a French colony), Burkina Faso, southern Niger, northern Nigeria, northern Ghana, southern Chad, the western Darfur region of present-day Sudan, and South Sudan. To the north of the region lies the Sahel, a more arid Acacia savanna region
Postage stamps and postal history of French Sudan and Governor General Noël Ballay in 1906 and a Tuareg horseman in 1914. All the above stamps of this colony with its successive names became uncommon for letters until 1920. In 1920, Upper Senegal and Niger became French Sudan and some of its regions became Upper Volta and Niger. The Tuareg horseman stamps were widely used in these three colonies until the late 1920s. From 1931 to 1944, the subjects were the Colonial Exhibition of 1931, Pierre and Marie Curie, the explorer René Caillié or the anniversary of the storming of the Bastille. But the subjects of the issues from