If you add up all the wars, genocides, and terrorist acts that occurred since 1973, the death toll is a staggering twelve million. Prior to its eradication, smallpox killed 1.5 to 3 million people every year, so by preventing these deaths for over forty years, its eradication has effectively saved somewhere between 60 and 120 million lives. The eradication of smallpox is one success story from aid, saving five times as many lives as world peace would have done.