World War I saw the advancement of new deadly weapons including tanks, poison gas, and flamethrowers. One of the deadliest conflicts in human history, it led to over 37 million casualties (9-16 million deaths).
World Population : 170,060,000
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World War I saw the advancement of new deadly weapons including tanks, poison gas, and flamethrowers. One of the deadliest conflicts in human history, it led to over 37 million casualties (9-16 million deaths).
World War I saw the advancement of new deadly weapons including tanks, poison gas, and flamethrowers. One of the deadliest conflicts in human history, it led to over 37 million casualties (9-16 million deaths).