Mongol Empire What is referred to in English as the Mongol Empire was called the "Ikh Mongol Uls" ("ikh": "great", "uls": "state"; Great Mongolian State). In the 1240s, one of Genghis's descendants, Güyük Khan, wrote a letter to Pope Innocent IV which used the preamble "Dalai (great/oceanic) Khagan of the great Mongolian state (ulus)". After the succession war between Kublai Khan and his brother Ariq Böke, Ariq limited Kublai's power to the eastern part of the empire. Kublai officially issued an imperial edict on 18 December 1271 to name the country Great Yuan ("Dai Yuan", or "Dai Ön Ulus") to establish the
Mongol invasion of Java Mongol invasion of Java The Mongol invasion of Java was a military effort made by Kublai Khan, founder of the Yuan dynasty (one of the fragments of the Mongol Empire), to invade Java, an island in modern Indonesia. In 1293, he sent a large invasion fleet to Java with 20,000 to 30,000 soldiers. This was a punitive expedition against King Kertanegara of Singhasari, who had refused to pay tribute to the Yuan and maimed one of its ministers. However, it ended with failure for the Mongols. Kublai Khan, founder of the Yuan dynasty, the principal khanate of the Mongol Empire,