Civil War Goes Global

Civil War Goes Global
Civil War Goes Global is an Althist with it's main POD being that after the Battle of Antietam, England decided to ally itself with the Confederacy. Unlike in OTL, the Confederacy has British support, and manages to hold out until 1867. However, it is a costly war, and and reconstruction lasted for much longer than in OTL. It's second POD is that Lincoln, being more guarded during the war, was never assassinated.