Answer:
<h2><em><u>C. Civil war </u></em></h2>
Explanation:
<em><u>The American Civil War from April 12, 1861 to May 9, 1865,</u></em> was a civil war in the United States fought between northern and Pacific states ("the Union" or "the North") and southern states that voted to secede and form the Confederate States of America ("the Confederacy" or "the South").
