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To what are you referring? https://en.wikipedia.org/wiki/Territorial_evolution_of_the_United_States#20th_century https://en.wikipedia.org/wiki/Territorial_evolu

by shimon 10y ago

To what are you referring? https://en.wikipedia.org/wiki/Territorial_evolution_of_the_United_States#20th_century https://en.wikipedia.org/wiki/Territorial_evolution_of_the_U... ends in 1970.