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North America is 'dripping' down into Earth's mantle, scientists discover
Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...
50 Fun Facts About America That Most Americans Don’t Know
The final version of the Declaration of Independence begins with the phrase: “The unanimous Declaration of the thirteen united States of America.” Thomas Jefferson, who wrote the document in June 1776 ...