How might the government deal with a huge company that has no competitors and is charging high prices

d.prevent the spread of communism outside of eastern europe.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.