It's called Showa Period in 1989 from 1926.
The depression which started after World War I does not recover. It went into Showa and became severe.
Furthermore, the Great Depression occurred and social unrest increased increasingly.
This time had the strong power of the military authorities.
The military occupied Manchurian dogmatically and established Manchurian country and this caused the United States and repulsion of the U.K. and withdrew from the League of Nations.
The occurrence of events such as the May 15 Incident (1932)
and the February 26 Incident (1936) indicated that the shadow of war was creeping over the Japanese society of those days.
The China Incident broke out in 1937, and escalated into an all-out war as a matter of practice.
The Pacific War has started in 1941.
Japanese national living a war follows became painful.
The factory and traffic facilities are destroyed and even the productive power became weak.
In 1945, the Okinawa extinction of Japanese military.
Moreover after an atom bomb was dropped on Hiroshima and Nagasaki, Japan surrendered unconditionally.
Japan was placed under control of General Headquarters (GHQ)
Japan pushed forward democratization after the war.
There was the Constitution of Japan in 1946.
The Treaty of Peace with Japan and Japan-US Security Treaty in 1951.
The industry of Japan progressed remarkably and made a superior product.