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electric power produced by moving water, usually generated by releasing water from a dam across a river
routes though which people can travel by foot, vehicle, rail, ship, or airplane
the process of building new industries in an area dominated by farming; the devolpment of large indursties
a person or group of people who want to seperate from their country or province or state
a cold, dry region covered with snow for more than half the year; a vast, treeless plain where the subsoil is always
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