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Oliver Goldsmith primarily worked in the 18th century. He was an Irish novelist, playwright, and poet, and is best known for his novel "The Vicar of Wakefield" and his play "She Stoops to Conquer." Goldsmith's work is characterized by its humor, wit, and social commentary. He was a leading figure in the Enlightenment, and his work helped to shape the literary and cultural landscape of the 18th century.