i think it the fish and house and gold.
the biggest export out of japan is vehicles..cars and such..
japan
* it is because they can export fish and seafood. * they can also receive/send merchandise by naval of by air.
As of 2014, Japan's main export is cars. However, they also export a decent amount of electronic goods and crops.
Fish is the main export of Iceland.
they export balls
We can export lumber to them
China is now Japan's largest export market, Source - Wikipedia
Greenland's main export is fish products such as fish and fish oil. Hides and skins are two other main exports.
rice
Australia