Complex sentence: After outstanding debts of over $1 Millions dollars were unable to be reformed and the Decatur branch franchise was revoked, and the building remained vacant until the 1860s when it was one of the 3 buildings surviving the Civil War in Decatur, Alabama.
Split into simpler sentences: After outstanding debts of over $1 million dollars were unable to be reformed the Decatur branch franchise was revoked. The building remained vacant until the 1860s when it was one of three buildings that survived the Civil War in Decatur, Alabama.