Which statements correctly describe Alexander I? Choose all answers that are correct. Question 9 options: He was the nineteenth-century grandson of Catherine the Great. He opposed the ideas of the Enlightenment and liberal changes his entire life. He was the tsar who finally ended serfdom. He helped defeat Napoleon.

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.