Final answer:
The passage was written during a time when slavery was prevalent in America, and the author's purpose is to challenge negative views of African Americans and highlight their equal potential for redemption and refinement.
Step-by-step explanation:
Historical Context: The passage was written in a time when slavery was prevalent in America.
Intended Audience: The intended audience of the passage is Christians.
Author's Purpose: The author's purpose is to challenge the scornful view of African Americans held by some Christians and to emphasize their equal potential for redemption and refinement.
Author's Point of View: The author's point of view is that African Americans, despite being viewed with scorn by some, can be refined and join the angelic train.
Based on the given passage, it can be inferred that the historical context of this text is B) The passage was written in a time when slavery was prevalent in America.