Was there a civilization on Earth before human civilization?
According to the current scientific evidence, there was no conclusive evidence that there had been other civilizations on Earth. However, some scientists and archaeologists believe that there was once a highly developed civilization on Earth, but these civilizations may have gone extinct. According to the research of some archaeologists, there were some highly developed civilizations on Earth, such as the ancient Egyptian civilization, the ancient Indian civilization, the ancient Greek civilization, and the ancient Roman civilization. However, the origin of these civilizations in historical records can be traced back to about 3000 B.C. Before that, there may have been other highly developed civilizations on Earth, but whether these civilizations were recorded or discovered is still unclear. Some scientists believe that there were some highly developed alien civilizations on Earth, but these civilizations may have gone extinct due to various reasons such as technological explosions, interstellar collisions, cosmic radiation, etc. The existence and extinction of these civilizations may be determined by the random and unpredictable nature of the universe. In short, there was no conclusive evidence in the scientific community to prove that other civilizations once existed on Earth, but this did not mean that this issue was not controversial and worthy of discussion.
