The Underground Railroad was a secret network that helped enslaved people escape to freedom in the 19th century. It wasn't a real railroad, but rather a series of safe houses and routes used by brave individuals who wanted to help those in need. Many people, including abolitionists and former slaves, played important roles in this movement. Key figures like Harriet Tubman risked their lives to guide others to safety. The Underground Railroad operated mainly in the United States, leading many to free states and even to Canada. This courageous effort was a significant part of the fight against slavery and helped change the course of history.