Final answer:
Frederick Douglass worked in Baltimore under Hugh and Sophia Auld, where he learned to read and write before escaping slavery.
Step-by-step explanation:
Frederick Douglass worked as a house servant in the city of Baltimore, Maryland, under Hugh and Sophia Auld. It was during this time that Douglass, with the assistance of his master's wife, learned to read and write, which played a critical role in his development as an orator and leader in the abolitionist movement. After his escape from slavery in 1838, Douglass moved to New York City, and later to New Bedford, Massachusetts, where he became a prominent figure, giving public lectures on slavery and eventually publishing his influential autobiography, Narrative of the Life of Frederick Douglass.