Earlier quoted context omitted.
Or maybe it wouldn't have taken so long. ;p
If you consider 50 years to go from having 99%, while also stabilizing an entire nation's food supply, and becoming an economic super power on par with EU/US then I hate to see what you consider fast. Oh we should also talk about their entire coastal region we’re devistaed by land war and Japanese occupation.
Still, I can't help but be happy at how so many people's lives have improved so greatly in such a short time.