The World War II dealt deadliest blow on humanity in terms of huge death toll -- 60-85 million deaths. Closest war with very high death toll was Mongol invasions with 60 million deaths. In recent time Paraguayan War remained quite bloody with death toll crossing 31,000 mark. It was shed lower than the 1990 war which resulted in 72,000 deaths.
Resources & Collections Free Ancestry Collections | Update on May 23, 2018