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1.
Washington D.C. is on the western side of the Potomac River
2.
Every U.S. state has received snow in the 21st century
3.
O'ahu is Hawaii's largest island by area
4.
The U.S. border with Canada is world's longest international land border
5.
Colorado is home to the tallest mountain in the contiguous U.S.
It is located in California, in Sierra Nevada
6.
The U.S. is one of the countries that claim a piece of Antarctica
7.
Miami is on the Gulf of Mexico
8.
Yellowstone is the most visited U.S. national park
Great Smoky Mountains on the NC-TN border is
9.
Texas produces more oil than any other state
10.
Michigan borders all the Great Lakes
All but Lake Ontario
11.
The United Nations headquarters are located in New York City
12.
Maryland is located on Chesapeake Bay
13.
The Mississippi River empties into the Gulf of Mexico in Mississippi
It empties in Louisiana
14.
There is an intersection between Utah, Colorado, New Mexico, and Arizona
15.
Other than Alaska, Maine is the northernmost U.S. state