The central idea of the given passage is: C. Van Lew was a spymaster,a leading force in the espionage activities for the Union.
The central idea can be described as the main idea of the passage which is the main point that the passage is revolving around, it states the mind of the author as well as the message that he is trying to pass across to the audience.
It should be noted that The central idea of the given passage is: C. Van Lew was a spymaster,a leading force in the espionage activities for the Union.
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