The group in 19th century America that would likely be the most receptive audience for "What to the Slave is the Fourth of July?" would be abolitionists.
Abolitionism in America
This movement had as its central objective to end slavery in the country, in the period before and after the Civil War in the United States.
The abolitionist movement had religious support, as slavery was incompatible with Christianity, so there were common efforts between abolitionists and religious for social reform in the country.
So the correct answer to the question is:
Find out more information about abolitionists here:
https://brainly.com/question/6788111
