What is the most populous US state?
California is the most populous US state, with about 39 million people.
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- Who founded Pennsylvania?
“William Penn founded Pennsylvania in 1681.”
Reference: Commonwealth of Pennsylvania
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Fun fact about relative height
The highest point in Pennsylvania is lower than the lowest point in Colorado.
How did the Louisiana Purchase change the size of the US?
In 1803 the US bought the Louisiana Territory from France for about $15 million. The deal roughly doubled the size of the country.