Tennessee was unaware of the Confederacy.
 Because Tennessee had ratified the Fourteenth Amendment before its readmission to the Union, it was the only former secessionist state that did not have a military governor during Reconstruction
After Abraham Lincoln was elected president in 1860, secessionists in the state government led by Governor Isham Harris sought voter approval to sever ties with the United States, which was rejected in a referendum by a 5446% margin in February 1861

