in Lithuania, the title of Didysis Kunigaikštis is more accurately translated as "high king", although it is traditionally rendered as "grand duke" in ancient Sumer, the rulers of all Sumer held the title of Nam-Lugal (high king). In Imperial Germany, the German Emperor (Deutscher Kaiser), who was also the King of Prussia, could be considered a contemporary "high king", as he held seniority over the other monarchs of the empire (three kings, six grand dukes, five reigning dukes and seven reigning princes) as "president of the confederation". The Yang di-Pertuan Agong (literally "supreme lord") in Malaysia could probably be seen as a "high king", as he is elected from among nine Malay rulers of the states (seven sultans, a raja, and a Yang di-Pertuan Besar-literally "great lord") by the Conference of Rulers (through informal agreement, on a rotational basis). In practice, however, the term "high king" is rarely applied to the Yang di-Pertuan Agong (king). Adhiraja or Adiraja is the comparable term of high king in India. The maharaja could possibly be rendered as "high king", although the literal meaning is closer to "emperor". Taewang, meaning "greatest of kings", was used by the later rulers of the Korean kingdom of Koguryo (and Silla, albeit to a rarer extent) to rank themselves as equals to the Chinese emperors or to express suzerainty over surrounding states, particularly during the Three Kingdoms Era. Daewang (great king) was used by rulers of other kingdoms and subsequent dynasties, including Baekje, whose king assumed the style of Daewang Pyeha ("his imperial majesty the great king") by the reign of King Mu (600-640 AD at the latest). However, after the Mongol Invasions of Korea, these rulers remained technically subordinate to the Mongol Empire and later China until King Gojong declared the Korean Empire in 1897 and assumed the title of Hwangje, or "emperor" (the Korean rendition of the Chinese "huang di"). Originally, the rulers of (), an ancient name of Japan, was known as the "Grand King of Yamato" (, ) or the "Kings of Wa" (, ) prior to the 7th century. It was later changed to become the Emperor of Japan (, ). The title "king of kings" also expresses much the same concept as "high king" – it was used at various times by the Emperor of Persia () and the Emperor of Ethiopia. Similarly, the Imperial Mongolian title Khagan is sometimes translated as