What factors led to japans economic success in the decades after world war 2?

Japan's economic success was due to U.S. military protection and economic assistance, the opportunity to build modern industries after wartime destruction, an educated and skilled workforce, and government regulation of industry and imports.

Explanation:

i belive the classic sword and a shield would do

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.