who did the mexican american war favor?

Answer 1

I don't understand your question. Wars don't favor either side.

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http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS374&q=mexican+american+war+&aq=f&aqi=g10&aql=&oq=&gs_rfai=Co7OIbnZ0TKi7EYjwzASAlbHoDwAAAKoEBU_Q6are