Presidents
Which two signers of the Declaration of Independence went on to serve as president of the United States?
Who is John Adams and Thomas Jefferson?
On which river is the USA's highest concrete dam?
What is The Colorado River?
In which natural valley is San Jose?
What is the Santa Clara valley
The Black Hills lie between which two rivers?
What is the Belle Fourche and Cheyenne river
According to the Census Bureau, what are the five most common surnames in the United States
What is Smith, Johnson, Williams, Jones and Brown