In what year was the Declaration of Independence officially adopted by the Continental Congress?
Who was the first President of the United States?
Which major land acquisition in 1803 nearly doubled the size of the United States?
What major conflict in American history took place between 1861 and 1865?
What Hawaiian naval base was attacked by Japan on December 7, 1941, leading to the United States' entry into World War II?
What symbolic barrier, dividing East and West Germany, fell in 1989, signifying the beginning of the end of the Cold War?
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