why did many states and empires gain more power over people and territories over the course of medieval and early modern times?

How do you think entrepreneurs contribute or industry in america? describe your answer

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

Someone who accepted the beliefs of social darwinism would have also agreed with which of these statements?