The government style of Japan after WWII. It was changed and reformed by America with American ideas.

A British style parliament state was established in which the cabinet became a committee of the majority party or coalition in the Diet. This broke with the Meiji Constitution, which had permitted the emperor or those who acted in his name to appoint prime ministers without regard for the Diet. The new constitution also added an American-style independent judiciary and a federal system of prefectures with elected governors and local leaders. Women were given the …

…as " the symbol of the state deriving his position from the will of the people with whom resides sovereign power." In Japan the most important parties are the Liberal Democratic Party and the communist party called the Japanese Socialist Party. The LDP is mostly responsible for the great wealth of Japan, if it wasn't for it's democratic ideas and capitalism that Japan would be the number one economic power in the world after the US.