The decisive military asymmetry was advanced firearms. European forces wielded breech-loading rifles, machine guns (e.g., Maxim), and artillery with far greater range, accuracy, and rate of fire than African armies' muskets, spears, and shields. This technological gap turned battles into massacres, enabling small European columns to defeat vastly larger forces and impose colonial rule across the continent during the "Scramble for Africa" (1880s–1914).