The Civil War Fourth grade Power Point discusses the key issues that divided the nation and led to the Civil War, including slavery and the Underground Railroad that helped slaves escape to freedom. It notes that over 2,000 slaves escaped and received food and shelter along secret routes. It also explains that more than 25,000 Hoosiers fought in the Civil War to keep the country united under President Lincoln's leadership, and that women on the home front helped support the war effort, including by working in stores that held weapons. Ultimately, the Union's victory brought an end to slavery across the United States.