the Mississippi, the Colorado, the Ohio and the Hudson
River. The main mountain chains are the Cordillera in the west and the Appalachian Mountains in the east. The Great Lakes on the border with Canada are the largest and the deepest in the USA.
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Washington DC (District of Columbia) is the capital
of the country and the seat of the government.
The
Capitol, where the Congress meets is in the centre of the city.
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The White House, the residence of the President,
is the oldest public building in Washington and one