Which is true, but, during the war the Confederate soldiers, of whatever State, were known to northeners as "Johnny Rebs"... The Mason/Dixon line was actually established in 1763 by British surveyors as the line between Pennsylvania and Maryland... only later dileneated as the border between slave and free states...
Feel I must go along with Big Al1st on this one. The question is 'what is it' Answer, Dixie. If the question from northerners was. 'What are the people called who lived there?' The answer would be 'Johnny Rebs'.
Although, far be it for me to disagree with a 'jenuwine ' US citizen.