Mark the letter A, B, C, o...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions
The Civil War in 1863 cut the United States into two nations - a southern Confederacy and a northern Union

A. acknowledged

B. alienated

C. severed

D. integrated