African Americans served mostly in support services during the Civil War. OA) This is true; they were mostly cooks and porters.
B) This is true; they took care of the horses and livestock.
C) This is false; they served mainly as spies.
D) This is false; 200,000 served in combat forces.

D i think

Explanation:

It can be said that this characterization, ''robber barons'', is largely justified because of the ways and means used by the industrial leaders to gain more wealth.

The industrial leaders in the 19th century were doing everything they could in order to accumulate more wealth. That often meant neglecting the laborers and their rights, keeping the wages as low as possible despite constantly having increase in profit, using violent methods to prevent having competition. In general, all of that can be put as robbing the people of what they deserved to have, be it wages or opportunities for progress, thus the ''robber barons'' characterization is a very good metaphor and largely justified.