The Atacama Desert, a coastal area where the borders of Chile, Peru, and Bolivia meet, was a region of little interest in the late nineteenth century until European research on the use of nitrates in fertilizers and explosives rendered the droppings of millions of sea birds a valuable commodity. In a move that echoed the California Gold Rush, the three neighboring countries soon battled for control of the region. In 1879, a comparatively modern and powerful Chile seized Bolivia's coastal province, and a secret alliance between Peru and Bolivia soon led to a full-scale war, one which saw the employment of much new military technology.