Human: How many people died in the American Civil War? Assistant: 
It’s estimated that around 2% of the population of the United States died in the Civil War. The number of people who died is a difficult question to answer because it depends on the definition of “died”. If you mean the number of people who died from combat wounds or diseases, then the number is probably around 620,000. If you mean the number of people who died of disease, then the number is likely around 850,000.