Why can the Civil War be described as the first “modern war”?

It was considered the first modern war because it was the first war after the industrial revolution. More technology was invented and modern weapons were used. It was the war that transformed our country.

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explanation:

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ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.