He gave a great impetus to French colonial enterprise, especially in West Africa, where he organized the newly acquired colony of Dahomey, and despatched the Liotard mission to the Upper Ubangi.
van Eetvelde, administrator-general of the foreign affairs of the Congo State, informed the French minister at Brussels that the International Association had not intended in 1884 that the right subsequently gave rise to considerable discussions with France, and eventually a protocol, signed at Brussels on the 29th of April 1887, continued the boundary along the Congo to its confluence with the Ubangi (Mobangi), whence it followed the thalweg of that river to its intersection with the 4th parallel of north latitude, below which parallel it was agreed that the northern boundary of the Congo Free State should in no case descend.
In accepting this frontier King Leopold had to sacrifice all claims to the valley of the Niadi Kwilu, in which he had founded fourteen stations, and to the right bank of the Ubangi.
- Protocol for delimitation of the Ubangi region.
21) reserving to the state the monopoly of ivory and rubber in the "vacant lands" constituted by the decree of 1885, and circulars were issued making the monopoly effective in the Aruwimi-Welle, Equator and Ubangi districts.