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المصادر https://engelsbergideas.com/essays/the-world-that-saltpetre-built/ https://www.jstor.org/stable/30061923 https://read.dukeupress.edu/hahr/article/43/2/230/159326/Nitrate-Crises-Combinations-and-the-Chilean https://www.historytoday.com/miscellanies/death-comes-atacama https://www.jstor.org/stable/3185084?read-now=1&seq=6#page_scan_tab_contents https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1008&context=jpur#:~:text=The%20Atacama%20Desert%2C%20Chile%2C%20one,their%20discovery%20in%20the%201800s. https://www.brown.edu/Departments/Joukowsky_Institute/courses/13things/7687.html https://docs.lib.purdue.edu/jpur/vol1/iss1/7/ https://uv.cl/archivo-noticias-uv/5997