There are a number of Chinese civil wars or rebellions that would have a better claim than the American Civil War. The Taiping Rebellion is one, the An Lushan

There are a number of Chinese civil wars or rebellions that would have a better claim than the American Civil War. The Taiping Rebellion is one, the An Lushan Rebellion is another. The Russian Revolution is also nearly double the death toll. One could also throw in the Wars of Religion and the 30 Years War as well.