One reason the economies of China, Japan and South Korea were able to grow in such spectacular fashion in the twentieth and early twenty-first centuries is that these countries did not have to settle internal questions of identity as they opened up to international trade and investment. They too suffered from civil war, occupation and division. But they could build on traditions of statehood and a sense of common national purpose once these conflicts were stabilised.
For South Korea specifically, I've found the motivation of my 80 year old Korean grandparents to return back very interesting. Personally not knowing an adequate amount of history surrounding Korea, I would've figured that they would feel an intense detachment from what "modern" Korea is -- an internationally prosperous, highly American-influenced nation. However, this section highlights how the pre-existing, strong identity felt within Korea has allowed it to remain culturally consistent/constant, and therefor comfortable.