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Potosí is the name given to the location of the “mountain of sliver” that was located in the Viceroyalty of 1)———, in what is now the country of 2)——— . The mine there was established in the mid-1500s in an isolated region, but the 3) ———were able to extract the silver from the mine using a system of forced labor. This was known as the “4)——— ” system, though it was based on a system began by 5)——— . Indian towns in the region were required to supply 6)———of their town’s male labor for work in the mines for a period of one year. The conditions the workers faced were brutal: dark and cold in the winter and sweltering in the summer, usually working 14 hours a day each day of the week. On average, around 7) ———workers were supplied each year to Potosi. When villages began to run out of workers to send to the mines, the Spanish began importing 8)——— . As for what came out of the mine, it is estimated that over 9) ——— of all silver from the New World came from Potosí.