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 the rest of the world, before experiencing another population boom. The new population boom was a product of the introduction of New World crops into China, mainly sweet potatoes, which could be more easily grown. By this time, the silver mines in Japan were largely depleted and the New World became China's primary source for silver. Initially, Japan served as China's primary source for silver in the 16th Century. In exchange for silver, China would provide Japan with silk and gold. Japan and China did not directly trade with each other, due to political tensions. This meant that European entities