What was the most important piece of technology during the civil war? a. rifle. b. primitive hand grenade. c. observation balloon. d. ironclad ship. e. telegraph?

The answer is a.rifle. Repeating rifles were most significant weapons during this war era. These rifles were convenient and very quick to load. This also served as the primary weaponry in battlefields and in the war zone. Rifles definitely provided a notable advantage to the militaries during the civil war. 

The answer is athens and sparta.