The confederacy was never a legitimate country. Their secession was illegal. They lost war. It was a Civil War. The definition you use proves it.
BS. The states were legitimate, independent entitites, recognized by Great Britain and the world. They joined and left two governments independently and unilaterally. Justice Grier did not rule their secession illegal as I documented, and that decision also notes that numerous nations recognized the independence of the Confederate states when 'the Queen of England issued her proclamation of neutrality, "recognizing hostilities as existing between the Government of the United States of America and certain States styling themselves the Confederate States of America." This was immediately followed by similar declarations or silent acquiescence by other nations."
If it was, as you claim, a civil war, you must PROVE that the confederacy did NOT have a government which conducted the war.
Hint: I'll make this VERY easy. Justice Robert C. Grier, speaking for the court, refers to the 'organization of a government by the seceding States'.