The Allied occupation of Japan following World War II brought about major political and social changes, including the drafting of a new constitution and the abolition of the samurai class.

The Japanese government has implemented various policies and incentives to promote the development and adoption of eco-friendly vehicles, such as tax breaks and subsidies.

The Mongol invasions of Japan in the 13th century were repelled by a combination of strategic planning and a typhoon that destroyed the invading fleet.