(1) The development process of nature and human society also refers to the development process of things or personal experiences. (2) Past facts and outdated things. Exodus: This matter has already become history. (3) Records, evolution and origin of past events; Souvenir (4) The discipline that records and explains historical events as a series of human activities. (5) the title of the book. History of the Greek-Persian war. Herodotus, the ancient Greek historian. This book has nine volumes. The first four volumes mainly trace the history of Egypt, Babylon, Persia, Lydia, West Xu Ya and Greece. The last five volumes describe the cause and process of the war between Greece and Persia, which ended in 479 BC. There are many myths and legends in the book, which are not credible. But this book is the first important historical work in Europe. (6) resume; Experience (7) Events that have an impact on the future formation process.