What event was the impetus for the development of the Japanese economy?

The Second World War completely undermined the economy of the Land of the Rising Sun. After the defeat, Japan lost its colonies and the capital invested in them. In the world market, goods made in Japan were displaced. Imports of raw materials fell to a minimum, and Japan, poor in natural resources, could not provide its own raw materials for its production. Agriculture stopped extremely slowly and the lack of agricultural land caused the deterioration of the life of the population. The Japanese government undertook a series of reforms that brought the country out of the crisis.