Is there more to the question?
New technologies were invented
Many people moved to the cities.
There were fewer farmers
D. They threatened the Dutch governor, who had to surrender
Answer: It's a monitor.
Explanation: I believe the answer's that the united states wanted to dominate other cultures. Also, I can't see the whole question, so I'm trying to help you the best I can.
In general, the railroads had a positive impact on the relationship between eastern cities and the Great Plains, since they allowed for the transportation of people and goods between these two areas in ways that were far quicker and more efficient than before.
