==Argentine and the Secret Treaty of 1873== 
 The article says nothings about the Argentina and the secret offenssive pact 

 ==After the war== 

 the article states: 
 :The national treasury grew by 900% between 1879 and 1902 due to taxes coming from the newly acquired lands.[115] British involvement and control of the nitrate industry rose significantly.[116] High nitrate profits lasted for several decades, but fell sharply once synthetic nitrates were developed during World War I. This led to a massive economic breakdown (known as the Nitrate Crisis). Many industrial factories had closed in the early 1880s to provide labor for the extraction industry. Loss of industry dramatically slowed the country's industrial development. When the saltpeter mines closed or became unprofitable, the British companies left the country, destroying many jobs. The former Bolivian region remained the world's richest source of copper and its ports moved trade between nearby countries and the Pacific Ocean. The former Peruvian region suffered because no new sources of wealth appeared after the Nitrate Crisis.  

 That doesn't belong to the history of the war and it is mostly speculation of the authors. Best regards, KS