Question

which form of transportation made moving soldiers to battle smoother during the civil war than in the past? (1 point) ports submarine steamboat ironclad ships

Explanation:

During the Civil War, steamboats were widely used to transport soldiers, supplies, etc., more efficiently than previous methods. Ports are locations, submarines were not a major transport for soldiers then, and ironclad ships were more for naval combat/defense. So steamboat improved soldier movement.

Answer:

C. steamboat