How did the battles over New Mexico and California territories give the
U. S. Army an advantage?

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The United States had been not only wealthier, larger, and more populous than Mexico, America also had industries to supply it with arms and ammunition.

i think it should be slowed colonial western march

number   5 i know this because savannah was the first capital and i took the test and all you have to do is look up a map of georgia savannah.