>>26
What goods does North Korea have that they would be able to export?

South Korea has industry that North Korea doesn't, but South Korea has lots of very fertile farmland, so much that their farmers are able to grow exotic foreign vegetables for local consumption whenever there is a fad for them, over and above sufficient rice and vegetables for domestic consumption (the latest fad in the expensive restaurants in Seoul is the kind of broccoli they cultivate in the US, believe it or not).

Doesn't North Korea also have farmland?

A few minutes with Google tells me that in South Korea mining was until the 1990s a very important part of the economy, but they do not have the sort of minerals or metals (it seems to be mainly clay, limestone, etc) that bring a lot of foreign exchange money right now.