Landforms that Form U.S. State Borders

Can you name the landforms that form the state borders listed below?
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Underdasher
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Last updated: November 14, 2025
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First submittedNovember 13, 2025
Times taken30
Average score66.7%
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Hint
Answer
WA-OR (partial)
Columbia River
ID-MT (mostly)
Bitterroot Range
AZ-CA
Colorado River
IL-MO
Mississippi River
IA-NE
Missouri River
IN-KY
Ohio River
OK-TX (partial)
Red River
MD-VA (mostly)
Potomac River
PA-NJ
Delaware River
VT-NH (mostly)
Connecticut River
SC-GA (mostly)
Savannah River
VT-NY (partial)
Lake Champlain
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