context: Along with advancements in communication, Europe also continued to advance in military technology. European chemists made deadly explosives that could be used in combat, and with innovations in machinery they were able to manufacture improved firearms. By the 1880s, the machine gun had become an effective battlefield weapon. This technology gave European armies an advantage over their opponents, as armies in less-developed countries were still fighting with arrows, swords, and leather shields (e.g. the Zulus in Southern Africa during the Anglo-Zulu War of 1879).
question: యుద్ధాన్ని విప్లవాత్మకంగా మార్చిన 1880లో ఏమి కనుగొనబడింది?
answers: the machine gun machine gun machine gun machine gun machine gun