In present world, it is very difficult to find a unique country in terms of culture, history, industrial, transportation and foreign policy and urban planning laws& regulations and a public-private partnership such as Japan. In this paper, a history outlook on regional planning in Japan from Meiji Era till present days will be taken in regards to the militarization, industrial&foreign policy, urban planning, government structure, transportation and social issues that caused socioeconomic disparities between the regions. Outcomes of this analysis can help us to understand the reasons behind current regional disparities in Japan as well as conditions that caused a formation of rail-integrated communities.