O A. China is captured by foreign invaders. B. China is controlled by strict social rules.
C. China is united under one powerful emperor.
D. China is a violent and unstable place.

Which options most accurately assess the impact of transportation improvements (e.g., railroads, canals, steamboats, transcontinental railroad) on the settlement of the west? ***(select all that apply.)*** a. they led to an increase in population density. b. they made it easier to travel long distances. c. they in establishing towns. d. they led to the development of the fur trade. e. they allowed for international travel.