Nuclear weapons. The "Little Boy" and "Fat Man" bombs dropped on Hiroshima and Nagasaki in 1945 killed over 200,000 people instantly. Biological weapons. The smallpox virus, introduced to the Americas in the 18th century, wiped out millions of indigenous people, changing the history of the continent. Chemical weapons. The nerve gas sarin, used in Ghouta, Syria, in 2013, killed over 1,400 people in a single attack. Artillery. The German "Big Bertha" in World War I fired 900-kilogram shells and was responsible for hundreds of thousands of soldier deaths. Kalashnikov assault rifles. The AK-47, developed in 1947, has been produced in 100 million units and remains the deadliest small arms in history. Machine guns. The Maxim machine gun, invented in 1884, laid the foundation for mass casualties, changing the tactics of 20th-century warfare. Anti-personnel mines. Every year, mines like the Soviet PMN-2 maim or kill thousands of civilians in 60 countries. Swords and bladed weapons. From the Roman gladius to the medieval claymore, these weapons dominated the battlefield for thousands of years. Bows and arrows. The English longbow, deadly in battles like Agincourt (1415), inflicted mass casualties at range. Pistols. The Glock 17, like other pistols, is the most widely used personal weapon, claiming thousands of lives daily. What do you think?