The correct answer is - industrialized.
After the World War II, Japan changed its ways of functioning in a totally different manner than what it was the norm until then. The country very quickly started to industrialize, and it imported lot of the Western technology and knowledge. Japan started to focus primarily on the economic development, by both, producing a lot, and producing with high quality, and that became their trademark, and still is.
Nowadays, Japan is one of the most developed countries in the world, and one of the industrial and technological leaders as well, being a country that made the best example as to how the leave behind the ugly history, and focus on the future and prosper.