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how did the united states expand its borders to include 48 of todays 50 states

Sagot :

I think the best way to summarize it is:

1) through a number of purchases:
Louisiana Purchase,
Gadsden Purchase

2)Through Anexation of the Republic of Texas (independent at the time)

3) and through war (The Mexican American-war, which lead to the Mexican Cession)

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