【单选题】
            
 (It was) the (split of) eleven southern (states) from the Union in 1861 that (leading) to the Civil War in the United States.
A.It was
B.split of
C.states
D.leading
        
        
			
            
            
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				根据网考网移动考试中心的统计,该试题:
12%的考友选择了A选项
6%的考友选择了B选项
5%的考友选择了C选项
77%的考友选择了D选项