<span> the miners found gold in the West, leading to the creation of New States</span>
Fairly sure the answer is: It allowed people to buy and sell goods in a wider market.
Think about it: without coins, people had to barter with mostly short-term goods, but coins held value over time and most people would accept it as payment. However, if you had to use, say, carrots, the guy you're trying to buy lettuce from may not need/want carrots, but he can use those coins to buy what he DOES need.
Hope I helped!
In the year 1869, the first transcontinental railroad was finished. The correct option among all the options given in the question is option "B". The construction of
the railroad started in the year 1863 and finished in the year 1869. It was a
1907 mile continuous railroad that connected Pacific coast of San Francisco Bay
with the Eastern U. S. rail network. The railroad was actually built by three
private companies of the United States. The railroad was opened for traffic on
10th<span> of May in the year 1869.</span>
Indus Valley, Ancient Egypt, Yellow River Civ, and Central Europe I think.