In your opinion, what stood out as the most remarkable achievement of Lewis & Clark's journey west? Use two examples from the story to support your claim At least a paragraph please please

In my opinion two examples from the story that were the most remarkable achievement of Lewis & Clark's journey west was when they both altered the imperial struggle for the control of North America, and strengthened the U.S. claim to the areas now known as the states of Oregon and Washington.

Explanation:

sitting in that one chair where he could get shot at was his worst decision.