I believe the answer would be: C. Custer and his force arrived ahead of the main U.S. force.
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").
Rapid economic growth generated vast wealth during the Gilded Age.
New products and technologies improved middle-class quality of life.
Industrial workers and farmers didn't share in the new prosperity, working long hours in dangerous conditions for low pay.
Gilded Age politicians were largely corrupt and ineffective.
Most Americans during the Gilded Age wanted political and social reforms, but they disagreed strongly on what kind of reform.
