Answer:
One of the most significant advancements in military technology during the Civil War was from inventor and engineer John Ericsson, who created the designs for a new type of naval vessel for the United States: the ironclad ship with revolving turret.
Explanation:
Your answer would be D
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Alot of stuff alot alot of stuff
Explanation:i think it could be anything
The golden pillars were used a long time ago