Microsoft Rewards Bing Homepage Quiz: Which war took the highest number of American lives?
A Civil War
B World War I
C World War II
The American Civil War remains the deadliest military conflict in US history, claiming the lives of between 620,000 and 750,000 soldiers, and an undetermined number of civilians. Challenges of record-keeping prevented an exact count of war casualties, although we know most were due to disease. All in all, it is estimated that 3% of the US population was lost due to the war.
The correct answer is Civil War.