I'm not 100% sure but it could be: Voluntary Exchange takes place between buyers and sellers:
(btw I copied and pasted from the question so I didn't take any content :D)
He was sent to lead 150 men into the mountains in search of silver and gold mines.
Answer:
B-Work was very hard and boring.
Explanation:
The young and old as well as men and women were made to work hard, often doing unpleasant jobs. Children could also find themselves sold to work in factories or mines.
<span>"The Battle of Antietam was one of the most important events of the American Civil War.
... The battle ended the Confederate invasion of Maryland in 1862 and
resulted in a Union victory. It also led to President Abraham Lincoln
issuing the Preliminary Emancipation Proclamation on September 22, 1862."
These are not my words, there from study.com / hope this will help you
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