Question: John Ball is recorded as one of the 3000 African Americans who escaped to the British lines during the American Revolution in a document about slaves who were evacuated to point in which Canadian Province ?
Sentence (from "Beninese Americans"): However, because in the first half of the eighteenth century many slaves were exported from Benin to the present United States, the number of African Americans with one or more Beninese ancestors could be much higher.
Relevant evidence: No