Combining with my own understanding, to talk about the benefits of a country with a long history, there is a saying called "Where do I come from? What should I do? Where am I going? " In fact, having a long history will let us know where we come from, where we are going, and even let me know what I will do in the future. The so-called history only records the evolution of a nation and a group. It can be called history, experience, process and even has no name. The name "history" is just a name given to it by human beings.
The long history gives us reference materials. Take Confucian culture as an example. If there is no Confucian culture in China, it may take a long time to accumulate and evolve in moral construction. But if we have a long history, then we can learn from everything. Combined with the actual situation of the current society, the most suitable management mode can be optimized. In the fields of law, medical skills, customs and law, it is precisely because of the long historical accumulation that we have more information for reference. These values are priceless, although they cannot be directly reflected.
Finally, for example, I don't know how many people still remember the ancient tomb discovered in earlier years, and the owner's body did not rot. At that time, some Japanese wanted to exchange hair and tissue with targeted things. Perhaps outsiders think that it is not worthwhile for the Japanese to do so, but in fact, by studying this found corpse, we can find out the reason why it does not rot, which is of great significance to the research of anti-corrosion materials. The discovery and excavation of these ancient tombs depend on historical documents. Who can say history is useless? Even the simplified words I use to answer your question now have been handed down because of the existence of history.