Aztec Ruins National Monument Aztec Ruins National Monument The Aztec Ruins National Monument preserves Ancestral Puebloan structures in the northwestern part of the U.S. state of New Mexico. This national monument is close to both the town of Aztec and the Animas River, and it is about northeast of Farmington, New Mexico. The Salmon Ruins and Heritage Park, which also has Puebloan structures, is about south of the monument. The Aztec ruins date from the 11th to the 13th centuries. American settlers in the 19th century named them the "Aztec ruins" based on their erroneous belief that the Aztec civilization built them. The site
Global silver trade from the 16th to 18th centuries to the expansive and profitable silver trade. In fact, research shows the amount of silver traveling from Manila to China was approximately three million pesos or 94,000 kilograms in the early 1600s. The rarity of silver production was seen as an opportunity for China to control the currency's value and support its own national currency. Silver was one of the only accepted trade items from Europeans and its value in China was astronomical compared to rest of the world. In fact, its value was twice that of Spain in the 16th and 17th centuries. Between 1600 and 1800 China received