Vì sao từ giữa thế kỉ XIX, các nước thực dân châu Âu đẩy mạnh xâm lược châu Phi?

the images of war are haunting

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.