On the Pacific coast of South America, midway between Chile and Peru and separating Bolivia from the ocean, lies the ill-omened nitrate-pregnant area of Tacna-Arica.

Since the close of the Chile-Peruvian war (1882), these nations have been vainly attempting to hold a plebiscite in order to determine which of them shall have Tacna-Arica in perpetuity, though Chile has administered it ad interim.

The situation is rendered inextricable by the fact that this once-Peruvian region has been gradually "Chileanized" until there is little doubt that the population now on the ground would vote at...

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