Those countries which in which the major use of their countries comes and fulfil through their own agricultural field. They should do it in a better way to make things before the way they was in mind that a time will come in which their will be food shortage in the country. They have to make their agricultural field system more fast as that was before and now they should produce more food to keep them for a long time and even they can supply these item to other countries.
But there will also be problem creating for those countries who have low on agricultural resources and who didn't have more in the agricultural resources. They all have to work on their Economics after that they can manage these things by getting through other countries in a way that they should get these things in order to give high money to other countries may be.
Every country has different form of raw materials, which they can sell to different countries around the globe to make profits. A food producing country, definitely, won't sell out all their food to other countries. Because they also need to regulate the circulation of food in the country not to run out of food. While other nations with other raw materials, which is not edible can purchase food with the money generated through exported goods. For a food producing country to manage their nation against food shortage, also has to do with demand and supply. Unless the land is polluted and few regions are now fertile. Then, they can reduce the rate of food export to other countries and focus on feeding their country. Especially, in the current world situation, where food is getting scarce with widespread of diseases, affecting the growth of crops. Farmers face difficulties like flood destroying their farm produce. In such a bad season, countries rarely export goods outside the country, because they didn't produce enough food. Hence, countries depending on imported food, would face serious food shortage. Thereby, skyrocketing the price of food in the region. Since, they can't import food like before, when the food producing nation had enough to export.
Would really be totally depending too on how their government would really be handling it out on which we know that they are the ones who do play a vital role when it comes to those kind of situations specially
in importation and exportation on which it would be understandable that if they do saw that there's an abundant supply of a specific product then they could decide on making some export for in exchange for other
possible things which could benefit them but if it turns out that it do becomes scarce then it would be normal that they would be cutting the supply on which it is a normal approach.
It would be always basing up with the law of supply and demand, price would go high basing up on that certain condition. We know that lands now are gradually been destroyed to make up new buildings
on which those are really just good for some planting or whatsoever so im not shocked that one day if there would be no enough farm fields because of this continuous development.