Answer: The empire became weak after numerous rebellions. The empire was in debt due to expensive building projects. The empire fell into decline after the death of a powerful leader.
Rail road companies facilitated settlement of the Great Plains because it provided a means of transportation for settlers to get to the location. The government had also provided land to these companies which they sold at an affordable cost to the new settlers. The area was a large expanse of flat lang making it easy for newcomers to establish agriculture. <span />
The answer to the question is C
