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The subregion that is the largest in land area is Eastern Europe.
South Atlantic
The District of Columbia.
huevos
THE NORTH part, is Brazil's largest and most rapidly devoloping subregion. It was home to the rubber boom more than a century ago.
Mount Washington
North America.
The Appalachian mountains
Subregion 1
the eastern time zone
Appalachian Mountains.
i have no clue