Original sentence: Confederate History Month and Confederate Memorial Day are thus highly controversial as they are linked to secession and the right to own black people as slaves.The Confederacy or the Southern states lost the Civil War, which occurred when the Southern states seceded from the United States, in order to continue the practice of slavery
Edited sentence: Confederate History Month celebrates a moment in US history when southern states seceded from and attacked the United States in order to continue the practice of slavery.Given the above facts, Confederate History Month and Confederate Memorial Day are highly controversial as they are linked to secession (seen by many as treasonous) and the right to own Black people as slaves.The ensuing war ended after 4 years and 27 days resulting in the death of over 249,000 US soldiers, 124,000 Confederate soldiers, 50,000 civilians, and 80,000 slaves