Why do many civilizations flourish and seem to disappear overnight?

Because at that time, many civilizations developed to the extreme, could not find a way out, and eventually perished. It is really difficult to inherit and develop civilization. In history, many civilizations have been broken and many have disappeared.

We all know that China belongs to an ancient civilization and is one of the few civilizations in the world. China has been passed down for thousands of years, and its culture and technology have gone through a thousand years of replacement. The current world hegemon, the United States, has a history of only a few hundred years, and many things are not as good as China.

Apart from China, there are many civilizations in the world, but it is a pity that these civilizations have not been passed down to establish a country and disappeared in the long river of history. Some civilizations even disappeared overnight without a trace, just like into thin air, and this civilization was broken.

In fact, many reasons for the demise of civilization are due to violence and external interference, and some of them are due to their own internal development to the limit at that time and unable to find a way for future development, so they collapsed on their own.

The extinction of most civilizations is due to violence. You know, in the colonial era, Britain, the Netherlands and other countries were keen on colonies, and the colonists there could not surrender as soon as they saw you coming. Sometimes, when they meet stubborn civilized aborigines, they are likely to be wiped out. Coupled with the spread of colonial ideas, this civilization was completely extinct from the inside out.

The inheritance and development of civilization is really difficult, because it is difficult for inheritors to abandon some things they once owned, and it is also difficult to have the courage to break some rules and accept new things.