Nonsense. The confederate mistreatment of federal POWs was as deliberate and as criminal as the federal treatment of rebel POWs was. Andersonville was deep in Georgia, an area untouched by the war when it was built. It was a rich and fertile area, providing food for much of the South. The confederates had sufficient transportation to get the POWs to Andersonville so they had transportation to get food there, too. If they had wanted to. They didn't, and tens of thousands died.
Unbelievable. Your ignorance knows no bounds.