Answer: americans extended the frontier when they learned about the territory from the expedition reports.
Explanation:
The expedition was significant as they discovered more than hundred specimen of biological plant life and animal kinds. They were welcomed and befriended by many native nevertheless a few had shown their unfriendliness towards them.
Their mission was to re-establish trade and business routes to India to declare American dominion.
The main reason Thomas Paine published Common Sense was to convince colonists that the colonies should become independent from Britain. Common Sense was a pamphlet that Thomas Paine in wrote in 1775–76 wanting to promote independence from Great Britain to the people in America in the Thirteen Colonies.
