How many people live in the US?
What is the US washed by?
Wat kinds of land does the US have?
How large is the Grand Canyon?
What is the New World?
When did the Wild West exist?
How many states are there in the US?
What are the greatest rivers in the US?
What are biggest mountain chains in the US?
What is the big melting pot?
What is the mixture of customs and traditions?