It is said that, all food production should be manufactured for nation and selling it for other countries should be reduced. Even though it has some positives, I totally disagree since it brings profit and reputation for nation.
It cannot be denied that importing is one of the factors gain income for public, therefore,
rising such way may be beneficial for country. Moreover, delivering own product to the world is factor which makes stronger relation bond among cultures as a result they exchange their products which gives chance individuals to taste new and different things.
In addition, manufacturing and sending it to another nations has efficiency belongs to reputation. Since if a culture exports their products, it makes its name famous around the world. It provides fame among the country which may affect to enhance other type of development like tourism. For example, I really admire traveling Italy which is owner of my favorite meal named pasta, after I tested it first
To conclude if countries produce all foods for their population and selling it little for other countries may make them country which is not close with other cultures and does not have popularity among them.