Nomadic tribes roamed in central Asia over 5,000 years. Nomadic people are very hospitable and independent with almost no inclination to ally with other tribes but in the late 12th century, a young Mongol son named Temujin (Chinggis Khan) appeared and united all Mongol tribes. In 1189, Temujin was titled Genghis Khan of the Mongol Empire.
After Genghis Khan’s death in 1227, the empire's expansion continued for a generation or more under Genghis's successor Ögedei Khan the speed of expansion reached its peak. Mongol armies pushed into Persia, finished off the Xi Xia and the remnants of the Khwarezmids, and came into conflict with the imperial Song Dynasty of China, starting a war that would last until 1279 and that would conclude with the Mongols gaining control of all of China. They also pushed further into Russia and Eastern Europe.
During the extension of the Mongol Empire, many Mongol units were left on the way and never made it back homelands such as in parts of China, Tibet, India, Afghanistan, and parts of Eurasia.
After the scatter of the Mongol Empire, the Manchu dynasty took control over Mongolia from the year 1691 to 1911. Mongolia declared independence in 1921and the Mongolian People's Revolutionary Party formed a government. When Bogd Khan died in 1924, the Mongolian People's Republic was found. During World War II, we stood against the attack of Japan and won the battle in 1939 at Khalkh Gol with support from the Soviet Union. Mongolia followed the Soviet system as the brothers’ relationship. All subsequent Mongolian texts were written in old Mongolian script (Uygurjin Mongol script) until replacement by Russian Cyrillic in the 1940s.
A new constitution came into force in 1960, and Mongolia was admitted to the United Nations in 1961. Mongolia was supported by the Soviet Union until 1989. By the late 1980s, relations with China even started to thaw and full diplomatic relations were established in1989. In March 1990, large pro-democracy protests erupted in Sukhbaatar square in front of the parliament building in Ulaanbaatar and hunger strikes were held." Lots of things happened at a rapid paste around that same month. Some of which are: J.Batmunkh, MPRP leader, lost power; new political parties sprang up, and hunger strikes and protests continued.
Mongolia held a multiparty election in June 1992 and became a democratic nation in Asia.