24 questions
Erie Canal
Continental Divide
Great Lakes
Mississippi River
Mississippi River
Erie Canal
Gulf of Mexico
Great Lakes
1
2
3
4
Philadelphia
New York City
Gettysburg
Washinton, D.C.
1
2
3
4
Philadelphia
Gettysburg
Washington, D.C.
New York City
Continental Divide
Atlantic Coastal Plain
Mississippi River
Great Plains
1
2
3
4
3
4
5
6
3
4
5
6
3
4
5
6
Washington, D.C.
New York City
Philadelphia
Boston
1
2
3
4
Great Lakes
Erie Canal
Mississippi River
Gulf of Mexico
3
4
5
6
Boston
Philadelphia
New York City
Washington, D.C.
3
4
5
6
Great Lakes
Great Plains
Gulf of Mexico
Continental Divide
1
2
3
4
Continental Divide
Gulf of Mexico
Great Plains
Atlantic Coastal Plain
Erie Canal
Mississippi River
Gulf of Mexico
Rio Grande
1
2
3
4
Philadelphia
Boston
Washington, D.C.
New York City
1
2
3
4