What is the direct definition of a canal a a large entity that can carry heavy loads b a machine that picks cotton faster c a boat that can travel up the current d a man made ditch filled with water

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.