These days, we are connected to the world through television and the Internet. Even if we wanted to cut off other countries from our lives, we couldn't do it. I thought all kinds of food could be grown in Japan.
Japanese food is imported from all around the world.
Now you can see how Japan, and the dinner we eat every night, depends on a lot of other countries around the world. In many of these countries which export foods to Japan, the cost of those foods domestically is so high that ordinary people can't afford them in the country where they are grown. Also, in order to give foods a more attractive appearance for export, agricultural chemicals are often used which cause diseases of the hands and feet in many people. That's the kind of thing we can all do.