Which statement best completes the diagram based on the Zhou dynasty's understanding of the Mandate of Heaven?A. China becomes unstable and its people feel unsafe. B.China is isolated from the rest of the world. C.China becomes wealthy and powerful. D.China is conquered by a foreign power.

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.