Third, despite the previously mentioned links, the 20th century dispute over Bolivia's maritime demands has caused instability in the relations between the two countries. Indeed, there have been periods of greater or lesser opening of the international border between Tarapacá and Bolivia.
Y en tercer lugar, a pesar de los vínculos antes mencionados, el conflicto por la demanda marítima de Bolivia durante el siglo XX ha significado una inestabilidad en las relaciones entre ambos países, con periodos de mayor o menor apertura de la frontera internacional que comparte Tarapacá con Bolivia.