Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The district was most recently used as an administrative unit in Japan between 1878 and 1921 and is roughly equivalent to the county of the United States, ranking at the level below prefecture and above city, town or village. As of 2008, cities belong directly to prefectures and are independent from districts. In Japan towns and villages belong to districts and the districts possess little to no administrative authority. The districts are used primarily in the Japanese addressing system and to identify the relevant geographical areas and collections of nearby towns and villages.