Peru was heavily indebted, and political in-fighting was again on the rise. Peru embarked on a railroad-building program that helped but also bankrupted the country. In 1879, Peru entered the War of the Pacific which lasted until 1884. Bolivia invoked its alliance with Peru against Chile. The Peruvian Government tried to mediate the dispute by sending a diplomatic team to negotiate with the Chilean government, but the committee concluded that war was inevitable. Chile declared war on 5 April 1879. Almost five years of war ended with the loss of the department of Tarapacá and the provinces of Tacna and Arica,
Miss Peru send her representative, Mary Núñez, to the Miss Universe Pageant, because she was prevented from participating by the president of the republic, Juan Velasco Alvarado. He considered the contest was the product of American capitalism, and a country with which he did not have good relations. This was the only occasion in which a Miss Peru did not participate in the Miss Universe except for the 1955 and 1974, when no contest was held. Given the refusal of Alvarado, Mary Núñez was sent to Miss World 1973 in London, England. In 1982, Peru became the first South American country to