The answer is c.empire and republic
Railroads were made which were a part of industrialization.
It was one of the masterpieces that has been created by human beings which was a symbol of victory, liberalization and dignity.
There might be more but here is the answer I gave you
The correct answer is B) "Bought grain, stored it, and resold it during times of low harvest":
Following a tendency of nationalizing several industries, which included salt, iron, and liquor, emperor Wu decided to interfere with the trade of grain in 110 BC. This happened as a response from the government to eliminate speculation generated by merchants by selling previously stored grain at below-market prices.