Chile–Peru relations forces as the Confederate forces began to split on opinions and the commanding skills of Manuel Bulnes Prieto proved superior to Santa Cruz, who was killed during the battle. Following this, Peru was once again unified, and Agustin Gamarra attempted to lead an invasion to Bolivia. The attack utterly failed, Gamarra was killed, and Peru and Bolivia entered into another war. Bolivia would once again invade Peru but, without Gamarra, Ramon Castilla became the most prominent military figure of Peru and troops were soon dispatched for the defensive. The success in this defense resulted in Peruvian victories that returned both
Water resources management in Peru upper basins, whereas the southern part of the country is particularly prone to droughts. Aside from natural causes, such as El Niño Southern Oscillation, the effects of droughts and floods have been exacerbated by manmade interventions including soil erosion stemming from poor cropping and grazing practices, deforestation, and poor land use-practices. El Niño hits Peru approximately once every seven years and consists of heavy winds and rainfall associated with devastating floods and landslides. In 1997–1998 the costs of damages reached US$2 billion. Droughts severely affect the southern coast, producing agricultural losses as well as limitations on human water consumption. Preventive