Taiwan was under Japanese rule after the First Sino-Japanese War, as per the Treaty of Shimonoseki of 1895.
Like the administrative divisions in mainland Japan, most of them are translated to "prefectures" in English.
The former system was abolished 11 November 1901, and twenty local administrative offices (chō) were established.
[3] Under a "Dōka policy" (同化) in which the Japanese considered the Taiwanese to be separate but equal, the political divisions in Taiwan became similar to the system used in mainland Japan in 1920.
The largest concentration of ethnic Japanese were in Taihoku followed by Takao and Tainan.