How has urbanization affected the culture of china and japan?

Well, there are many ways. I hope these help you!! :)

- Food impacted them greatly, meaning that once the healthiest areas, is now declining in health dramatically. 

-Environment is one big issue. Smog, smoke, and filth are covering areas of asia as population increases.

-Population is another problem. China had to put in the one child policy because population became so uncontrollable. 

Answergovernment control over all imports and exports;

It just all depends on where you live at the moment