Original sentence: A Confederate cemetery on the north side of Alton holds some of the Civil War dead.A memorial marker is at the site.As a consequence, representatives drafted the Thirteenth Amendment of the Constitution, to end slavery, in Alton.During the American Civil War, Union forces operated a prison at Alton.During the years before the American Civil War, some owners used their majestic homes as stations on the Underground Railroad to aid slaves escaping to the North.Sometimes when Confederate prisoners escaped, they tried to cross the Mississippi River back to the slave state of Missouri.The mob threw the press into the Mississippi.This murder made Lovejoy the first martyr of the abolition movement
Edited sentence: A Confederate mass grave on the north side of Alton holds many of the dead from the epidemic.A memorial marks the site.After killing him, the mob threw the press into the Mississippi.As a consequence, representatives came to Alton when they drafted the Thirteenth Amendment of the Constitution, to end slavery.During the American Civil War, Union forces used it to hold prisoners of war, and some 12,000 Confederates were held there.During the smallpox epidemic of 1863-1864, thousands of men died.During the years before the American Civil War, several homes were equipped with tunnels and hiding places for stations on the Underground Railroad to aid slaves escaping to the North.Lovejoy was the first martyr of the abolition movement.Sometimes when Confederate]] prisoners escaped, they tried to cross the Mississippi River back to the slave state of Missouri.The first penitentiary in Illinois was built in Alton.While only a corner of it remains, it once extended nearly to "Church Hill"