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
French Sudan of growing Egyptian cotton in West Africa during World War I, Émile Bélime began to campaign for the construction of a large irrigation system along the Niger river. Starting in 1921, significant irrigation projects around Koulikoro and later at Baguinéda-Camp and the Ségou Cercle began to bring water. The French believed this project could rival the major cotton growing centers of Egypt and the United States. Unlike other agricultural projects in French West Africa, the French Sudan irrigation project initially relied on families voluntarily resettling along lines established by the colonial authority. Unable to attract enough volunteers, the colonial authorities