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Author : Meta菲力哥The following content is a personal opinion and does not represent investment advice.If you like it, please comment, like and share! Around 3500 BC, the Sumerians created the oldest civilization in the history of mankind on the Mesopotamian plains, which is also considered to be the earliest civilization of mankind. It meets the academic standards for the birth of civilization, including the emergence of cities, the emergence of writing, and the establishment of national systems. At the end of the 15th century, the Italian navigator Columbus discovered the…