!where did the first major civil war battle with heavy casualties occur? a. gettysburg b. fort sumter c. manassas d. cold harbor

Gettysburg had the highest casualties in history until a world war. Gettysburg is the answer

I think it was the Manassas because the battle happened a little but after the war started making it the first battle of them

The first one is russia because in russia they were on the rough times and they never had a way to get out of

South carolina was so angry about the election of lincoln that they seceded from the union on december 20, 1860. they attacked fort sumter later, on april 12, 1861.