How did advancements in technology and warfare impact the ratio of military to civilian casualties from world war i to world war ii? a) the use of powerful weapons like the atomic bomb increased the percentage of civilian casualties. b) increased accuracy of weaponry and precise military tactics reduced the percentage of civilian casualties. c) the percentage of civilian casualties increased because of chemical warfare, but the overall number of casualties decreased. d) the ratio remained relatively constant, though the overall number of casualties increased greatly due to the introduction of aerial combat.