Question: 南方是何时脱离联邦的
Answer: 1860-12-20; 12-20-1860; 12 20 1860; 1860 12 20; 20 12 1860; 12/20/1860; 20-12-1860; 1860-12-20; 1860 december, 20; 1860 十二月 20; 20/12/1860; 20 十二月 1860