What factors contributed to the westward expansion of the U.S.?
2 answers:
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"Same question up top"
A. At the divergent plate boundary in the middle of the ocean
B. On the oceanic crust along the edge of the North American Continent
C. At the convergent plate boundary in the middles of the ocean
D. On the continental landforms on either side of the ocean
The answer is A. At the divergent plate boundary in the middle of the ocean (Apex)
