International cooperation to conserve the wildlife and natural resources of Africa was first realized by the colonizing powers of Great Britain, France, Germany, Portugal, and Spain on May 19, 1900 with the International agreement to preserve African wildlife(King Leopold's Congo Free State did not participate). The treaty prohibited the killing of certain African animals and "all other animals which each local government judges necessary to protect, either because of their usefulness or because of their rarity and danger of disappearance.” The treaty was proposed because of the rapid depletion of African big game which was being hunted for pleasure by Europeans, with a secondary motive being to preserve the remarkable and novel wildlife and fauna of the continent. African animal populations at the time were suffering because of deforestation, breech-loaded firearms, growth in human populations, and overhunting. This treaty, however, did not address the entire African ecosystem but only a handful of species. The
Convention Relative to the Preservation of Fauna and Flora in their Natural State began to address the conservation of whole African ecosystems. When European colonies gained independence as sovereign nations, pressure for a new and more comprehensive conservation treaty began to mount. == Treaty Content and Obligations ==