Civil War

The Death Toll from Secession

The Civil War continues to be the most deadly American war, but the approximately 600,000 deaths could actually be an undercount. The New York Times' Disunion blog:

New estimates, based on Census data, indicate that the death toll was approximately 750,000, and may have been as high as 850,000.

Nearly a million Americans died because of southern secession. If there's a modern lesson in this, it's that the idea of seceding ought to be taken very, very seriously and anyone who dabbles in the notion is a colossal idiot with an unhealthy degree of bloodlust.