the worst war the USA. fought was the Civil War.
the battle of antietam
The Gatling gun.
the cities of the south
Andersonville Prison
the first gun shot of the civil war was started
No.
Gettysburg
Andersonville
is total war which means they destroy everthing!! and the worst war was the civil war which killed at least total of 500,000 much more then all the wars combine!!
GUN powder.
PetersbergYes- limited use later in the war.