B)<em> regulation and inspection</em>
Answer: the gold solidus of the Byzantine empire (Eastern Rome).
Explanation: There were lots of trades with gold, going into the Byzantime Empire, {used to be rome}
President Lincoln demoted McClellan because C. McClellan failed to defeat Lee at Antietam Creek. McClellan also failed to pursue Lee after the Battle of Antietam despite Lincoln's commands.
He is a part of Trump's cabinet members.
He wanted to free slaves on the precedent that all men are created equal.