Answer:
Meriwether Lewis.
Explanation:
Meriwether Lewis was asked by Thomas Jefferson to explore the Louisiana Territory as well as to map out the western lands in search for the Northwest Passage. Lewis was joined by William Clark as the leaders of the expedition. Clark was put in charge of the water navigation, while Lewis took leadership in the land navigation.
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Saratoga- the continental army preserved and won the decimated burgoynes troops, cut off supply routes and Burgoyne never received his promise and desperately needed reinforcements ( found online so change to oun words)
Yorktown-after three weeks of nonstop bombardment birthday and night from artillery Cornwallis surrendered to Washingtonian the field at Yorktown ending the war ( also found online)
HI I AM HERE TO HELP! IT HELPED BECAUSE HIS IDEAS CAUSED MANY CHANGES INTO OUR MODERN WORLD!