Despite a France-Congo Free State convention establishing a border around the 4th parallel, the area was contested from 1892 to 1895 with the Congo Free State, which claimed the region as its territory of Ubangi-Bomu (Oubangui-Bomou). The Upper Ubangi was a separate colony from July 13, 1894, until December 10, 1899, at which time it was folded back into the French Congo. The Upper Shari region was established as part of the French Congo on September 5, 1900.[1] That same year the Company of the Upper Ubangi Sultanates took over 140,000 km2 of Upper Ubangi as a concession.[2]