What role did sailing technology play in overseas exploration during the civil war?

The correct answer to this open question is the following.

The role that sailing technology played in overseas exploration during the civil war was of the utmost importance because it allowed the transportation not only of people but of goods, raw materials, natural resources, and war supplies. That is why the control of the Mississippi River was essential for both sides, the Union Army and the Confederate Army. It represented a strategic advantage for the transportation of troops, food, and weapons.

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