The fact is that African and Asian football has progressed significantly in recent years, which can be seen in the examples of the success of South Korea in 2002 and Morocco last year
Japan and South Korea are teams in Asia that have experienced a lot of progress, especially Japan, not because they were able to beat Germany but being able to qualify for the knockout rounds is an achievement and Iran also a power team from Asia, this is quite surprising because the country's conditions are not so conducive, but the national team can still play in the World Cup.
Saudi Arabia is working hard to develop their league but not sure if it will directly impact their national team because as far as I can see the development only affects the popularity of their league. With the increase in the number of participants, Asia will also get an addition but I'm not sure that there will be a new team that will impress because Europe and America have always been the best in the World Cup.
Japan has become the king of football in Asia which has been recognized by the world for a long time, even now we can see Japanese soccer players playing in Europe. Japan has never been absent in the world cup, and their matches are also very great, the Japanese national team has won many achievements by winning the Asian Cup, even Japan has the largest collection of Asian Cup titles. Because the progress of Japanese football begins with making improvements from the start. Everything is done with an orderly concept and plan. The long-term plan for Japanese football is called the "100 Year Vision".
Yes, the same is the case with South Korea, where the progress of football has also developed, and their appearance at the World Cup has also stolen the attention of the public, and many of their national team players are in the spotlight of European clubs, we can see that Asian players were so underestimated, but now they are already able to compete with European players. Even though there are still many countries that are left behind in terms of football, I don't need to discuss that part.