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North America's first immigrant, who probably moved into the region from Asia thousands of years ago
a "super-city" that is made up of several large and small cities such as the area between Boston and Washington, D.C.
an informal network of safe-houses, in the United States, that helped thousands of enslaved people escape to freedom
farming method used in dry regions in which land is plowed and planted deeply to hold water in the soil
musical form that developed in the United States in the early 1900s, blending African rhythms and European harmonies
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