A country can rely on domestic demand instead of export. Can it remain stable? The answer is absolutely not, because there is no export, no foreign exchange, no foreign exchange, and you can hardly import the oil, chips and operating systems needed for communication equipment. Unless you are a primitive man, you don't need oil, modern communication products, and you won't be invaded and armed by other countries.

The development of any country needs imports. No country can produce all products completely self-sufficient, without relying on world trade and industrial chains in other parts of the world.

Even a country like North Korea needs to import the oil, spare parts and technology needed to produce weapons. Without export, there is no foreign exchange. Without foreign exchange, there is no way to import any products. Apart from arms exports, North Korea has almost no other products to export. It can only exchange some necessities with China. On the other hand, North Korea's demand for communication equipment is not high, but it still needs to import communication components such as chips.

For example, some countries in Africa may be poor and may not need communication products, but they need weapons. Africa may not produce any products, but it can only exchange foreign exchange for the export of primary products such as oil and minerals to meet the basic survival needs of the country.

A completely closed country does not need any modern products or any spiritual needs. It is only satisfied with filling its stomach and eating agricultural products. It still exists. However, without any technology, there would be no electricity and no electricity. If a country can survive, it is almost close to primitive humans. Are primitive people stable in life?