The Lewis and Clark, to explore the mountains in the west, were taller than the mountains in the east.
What is the meaning of the Mississippi River?
North America's largest and most significant river is the Mississippi. In terms of its size, variety of habitats, and biological productivity, the Mississippi River is one of the major river systems in the world.
While Lewis continued to travel on horseback to get more supplies, Clark rode the boat up the Mississippi River.
As a result, option (d) is correct.
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