Final answer:
The first paragraph of 'The Dark Game' highlights the misjudgment of the Civil War's duration, emphasizing its prolonged and challenging nature.
Explanation:
The first paragraph of 'The Dark Game' best supports the central idea that the Civil War was a long war by highlighting how both Northerners and Southerners initially expected a short war but were faced with a conflict that lasted four years and resulted in significant casualties.
It emphasizes the misjudgment of the duration of the war by the parties involved and how the conflict unfolded over a lengthy period, contrary to initial beliefs.
This paragraph sets the stage for understanding the prolonged and challenging nature of the Civil War, reinforcing the central idea of its long-lasting impact.
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