The significant author who wrote a classic work exploring social issues in the 19th century is Harriet Beecher Stowe. Her groundbreaking novel, "Uncle Tom's Cabin," published in 1852, played a crucial role in shaping public opinion on slavery in the United States. Through compelling characters and poignant narratives, Stowe exposed the brutal realities of enslavement, igniting anti-slavery sentiments across the nation. The book's impact was profound, contributing to the Civil War and the push for emancipation. Stowe's work continues to be studied for its literary merit and historical significance in the fight against racial injustice.