French Sudan change until 1933. At that point, the colony of the French Upper Volta ("Haute-Volta", modern Burkina Faso) dissolved, and the northern territory was added to French Sudan. In 1947, Upper Volta was reestablished, and the French Sudan borders became those that eventually became the borders of Mali. Kayes was the original capital city from the 1890s until 1908, when the capital moved to Bamako, where it remains. The colony supported mostly rain-fed agriculture, with limited irrigation for its first 30 years. The only cash crops were nuts gathered close to the railroad between Kayes and Bamako. However, following successful tests
French colonial empire "In an effort to restore its world-power status after the humiliation of defeat and occupation, France was eager to maintain its overseas empire at the end of the Second World War." However, after 1945 anti-colonial movements began to challenge European authority. The French constitution of 27 October 1946 (Fourth Republic), established the French Union which endured until 1958. Newer remnants of the colonial empire were integrated into France as overseas departments and territories within the French Republic. These now total altogether 119,394 km² (46,098 sq. miles), which amounts to only 1% of the pre-1939 French colonial empire's area, with 2.7