"They promised bills and laws in favor of immigrants in exchange for votes" is the one way among the following choices given in the question that political machines, such as Tammany Hall, work with and for immigrants.
C would be correct because of the Marshal plan, Truman doctrine, Eisenhower doctrine etc
Taking an educated guess here -- I think it would be 1, 3, and 4 which all seem pretty reasonable.
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In summary, the "Europe first strategy" allowed the coalition forces to concentrate on defeating the axis powers by using the bulk of available means (about 70% to 30%) against Germany (and Italy) while fighting a war of containment in the Pacific, with the ultimate end to then entail a "Grand Alliance" assault on the ..
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