The first settlers in North America were from which area of the world? A.
Asia
B.
Africa
C.
South America
D.
Europe

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Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

How would i answer this for an exam?