There are many romanization systems used in Taiwan (officially the Republic of China). The first Chinese language romanization system in Taiwan, Pe̍h-ōe-jī, was developed for Taiwanese by Presbyterian missionaries and promoted by the indigenous Presbyterian Churches since the 19th century. Pe̍h-ōe-jī is also the first written system of Taiwanese Hokkien; a similar system for Hakka was also developed at that time. During the period of Japanese rule, the promotion of roman writing systems was suppressed under the Dōka and Kōminka policy. After World War II, Taiwan was handed over from Japan to China in 1945. The romanization of Mandarin Chinese was also introduced to Taiwan as official or semi-official standard.