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,
Spanish immigration to Peru Spanish immigration to Peru A Spanish Peruvian is a Peruvian citizen of Spanish descent. Among European Peruvians, the Spanish are the largest group of immigrants to settle in the country. In 1532, the Spanish conquistadores arrived in Peru. As they began to conquer the country, their culture and influence spread throughout the nation. Not only did their ideology spread, their population did as well. Over the period of the Peruvian colonial era, hundreds of thousands of Spanish immigrants flooded into Peruvian ports. These Spanish-born immigrants, called "Peninsulares", caused much friction between themselves and the locally born Spanish criollos or creoles.