Complex sentence: During the 1870s, Peru capitalized on the guano exploitation and nationalized all industries in the region, leaving Peru with 58.8% of all saltpeter production, while Chile held 19% and Great Britain 13.5%.
Split into simpler sentences: During the 1870s, Peru capitalized on the guano exploitation and nationalized all industries in the region. Peru controlled 58.8% of all saltpeter production, while Chile held 19% and Great Britain 13.5%.