How did the columbain exchange effect european trade? a) it establish trade routes to africa b) it establish transatlantic trade routes to the americans c) it european traders establish a shorter route to china d) it european traders establish stock exchanges

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.