Clayton County played a pivotal role in the Civil War. The Battle of Jonesborough (the original spelling of Jonesboro) was fought Aug. 31 to Sept. 1, 1864. The Road to Tara Museum is commemorating that decisive battle in a new Civil War exhibit which opens Friday. The exhibit showcases the battle that ultimately led to the end of the Civil War. An area of the museum has been turned into a two-room walk through history and is dedicated to the Atlanta Campaign in the Civil War. The exhibit coincides with the final year of the Civil War’s sesquicentennial or 150th anniversary. It includes photos, artifacts from that period as well as a handpainted diorama showing the final day of the Battle of Jonesborough. The exhibit opens Friday from 8:30 a.m. to 5:30 p.m and Saturday 10 a.m. to 4 p.m. It will be open Monday, Labor Day, from 10 a.m. to 4 p.m. The exhibit will be a permanent fixture of the museum.