The answer would be C. the movement of plants, animals, people, and diseases between the old world and the new world.
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Offered advice on getting and keeping power
The United States menifested its destiny by trying to expand from coast to coast. But first the americans have to kick out the native americans because the native americans are in there land and is blocking there way to menifest.
So your answer would be <span>acquired all the land between the Atlantic and Pacific Oceans</span>