When was Japan's government made?

Answer 1

Japan's semi mythical first emperor was Jimmu Tenno. In terms of time we're talking the time period of 600 AD (common era).

Prince Shotoku (Shotoku Kotaishi) is credited with codifying Japan's laws. He is often seen as the founder of modern Japan, in many ways. This is circa 600 to 700, Common Era.

The modern system of government came about in the aftermath of the 2nd World War; Japan adopted a constitution and a British style, parliamentary system of government, complete with prefectural governors, members of parliament, a Prime Minister, and cabinet members.

His Imperial Majesty the Emperor is greatly respected but is literally a "symbol of unity of the Japanese people." He wields no real political authority. However he is greatly revered, and while he usually stays out of Japanese politics, on the rare instances when he does speak to a certain subject, the Japanese people LISTEN.