Will Give Brainyest o((⊙﹏⊙))o. During westward expansion, explorers faced physical barriers and gateways throughout America. Which statement best describes the role of the landform represented by "C" on the map?
A)The Rocky Mountains were a physical gateway because it provided food and water.
B)The Rocky Mountains were a barrier because there was no route to get around them.
C)The Great Basin was a physical gateway because it allowed explorers to travel by boat.
D)The Great Basin was a barrier because of its extremely cold year round temperatures.
PART 2
Which Statement BEST describes the role of of the landform represented by "A" on the map during westward expansion?
A)The Great Lakes were a physical gateway because they stretch across America's land.
B)The Missouri River was a barrier because it dried up every summer and flooded in spring.
C)The Missouri River was a physical gateway because it allowed explorers to travel by boat.
D)The Great Lakes was a barrier because the waters were rough and difficult to travel by boat.