Hello and welcome to Just Answer !
After the war, Japan received assistance and technology from the USA and several other countries of Europe. The progress was very rapid. For about 30 years, from around the 1950s to the 1980s, Japan grew very fast. It became one of the major economic powers of the world.
This and more can be found at:
www.simple.wikipedia.org/wiki/History_of_Japan
REMEMBER TO
CLICK THE GREEN ACCEPT BUTTON SO I GET PAID FOR MY WORK AND POSITIVE FEEDBACK IS APPRECIATED.
Danny