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Q. Which U.S. state is known as the "Lone Star State"?
Q. The Appalachian Mountains run through which region of the United States?
Q. What is the official currency of the United States?
Q. Which state is known as the "Sunshine State" of US?
Q. What event marked the beginning of the U.S. involvement in World War II?
Q. What historic event is associated with the address "54°40′ or Fight"?
Q. In which year did the United States declare its independence?
Q. What is the capital of the United States?
Q. Which river forms part of the border between the United States and Mexico?