The answer is a at least I think it is
Answer: The purpose of the footnote to paragraph 4 is that It provides an additional fact related to the Civil War.
You can compare the reactions to the townshend acts with reactions to the stamp act since people decided protest for both acts. Townshend Acts<span> did not create an instant uproar like the </span>Stamp Act. Hope this answers the question. Have a nice day.