Complex sentence: Born on a plantation on Tortola, an island in the British West Indies, Humphreys came to Philadelphia in 1764, where he became concerned about the struggles of free African Americans to make a living.
Split into simpler sentences: Born on a plantation on Tortola, an island in the British West Indies, Humphreys came to Philadelphia in 1764. He became concerned about the struggles of free African Americans to make a living.