Post war re-building. Japan & Germany.
I do not know anything about the Japanese post-war revival, but if you want to understand the German revival after 1945 you should read a book called 'Exorcising Hitler'. Written by Frederick Taylor and first published in 2011.
It gives a detailed account of how Germany so quickly rose again to political and financial dominance in Europe. Very good read.
Incidentally, I have been to Japan 6 or 7 times on business. Fascinating place and the cities are like churning any heaps...millions of people scurrying about. Smartly dressed and ultra polite. Tokyo has a population of 14 million, yet close to 25 million use the public transport system EVERY day as people pour in from surrounding cities. I spend a lot of time in Tokyo and Yokohama plus a few other cities. Technology wherever you look and amazing buildings that make ours look like stone-age throwbacks..... CLEAN........no litter at all.
It is really worthwhile buying something in one of their department stores.....such care in wrapping the simplest thing. ....you can hardly bring yourself to open the parcel when you get home. Not just shoved into a bag, as is the rule here.