Dixie was a popular term around this time and has a few different origins. Again, in Louisiana, it was due to "dix" being the French word for 10. It states this

Dixie was a popular term around this time and has a few different origins. Again, in Louisiana, it was due to "dix" being the French word for 10. It states this in the article you linked. Eventually, Louisiana became known as "Dixieland" and the term ultimately was used to refer to all of the south. Dixie also came to be because of the Mason Dixon line, but this is not referenced anywhere in Dixie Cup's history. Again, they were a northern company. Are you confusing them with Dixie Crystals?