Why were there so many American casualties in the Civil War?

The use of bombs caused mass destruction across the South.

The war was fought over a large area affecting many population centers.

Supply lines failed and blockades succeeded.

The war brought numerous

B. War was fought over large population.

Explanation:

But the way i see it is that the Civil war was the bloodiest in U. S history because both sides were Americans. It didn't matter which side lost more it was all the same bloodshed in the American population. But the war was brought to several regions of the country.