Ili River in the context of "Trans-Ili Alatau"

The Yuezhi were an ancient people first described in Chinese histories as nomadic pastoralists living in an arid grassland area in the western part of the modern Chinese province of Gansu, during the 1st millennium BC. After a major defeat at the hands of the Xiongnu in 176 BC, the Yuezhi split into two groups migrating in different directions: the Greater Yuezhi and Lesser Yuezhi. This started a complex domino effect that radiated in all directions and, in the process, set the course of history for much of Asia for centuries to come.

The Greater Yuezhi initially migrated northwest into the Ili Valley (on the modern borders of China and Kazakhstan), where they reportedly displaced elements of the Sakas. They were driven from the Ili Valley by the Wusun and migrated southward to Sogdia and later settled in Bactria. The Greater Yuezhi have consequently often been identified with peoples mentioned in classical European sources as having overrun the Greco-Bactrian Kingdom, like the Tókharoi and Asii. During the 1st century BC, one of the five major Greater Yuezhi tribes in Bactria, the Kushanas, began to subsume the other tribes and neighbouring peoples. The subsequent Kushan Empire, at its peak in the 3rd century AD, stretched from Turfan in the Tarim Basin in the north to Pataliputra on the Gangetic plain of India in the south. The Kushanas played an important role in the development of trade on the Silk Road and the introduction of Buddhism to China.

Lake Balkhash, also known as Lake Balqash, is a lake in southeastern Kazakhstan. It is one of the largest lakes in Asia and the 15th largest in the world. It is located in the eastern part of Central Asia and sits in the Balkhash-Alakol Basin, an endorheic (closed) basin. The basin drains seven rivers, the primary of which is the Ili, bringing most of the riparian inflow; others, such as the Karatal, bring surface and subsurface flow. The Ili is fed by precipitation, largely vernal snowmelt, from the mountains of China's Xinjiang region.

The lake currently covers about 16,400 km (6,300 sq mi). However, like the Aral Sea, it is shrinking due to diversion and extraction of water from its feeders. The lake has a narrow, quite central, strait. The lake's western part is fresh water and its eastern half is saline. The eastern part is on average 1.7 times deeper than the west. The largest shore city is named Balkhash and has about 66,000 inhabitants. Main local economic activities include mining, ore processing and fishing.

Choros was the ruling clan of the Ööld and Dörbet Oirat and once ruled the whole Four Oirat. They founded the Dzungar Khanate in the 17th century. Their chiefs reckoned their descent from a boy nourished by a sacred tree.
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Moghulistan, also called the Moghul Khanate or the Eastern Chagatai Khanate, was a Muslim, Mongol, and later Turkic breakaway khanate of the Chagatai Khanate and a historical geographic area north of the Tengri Tagh mountain range, on the border of Central Asia and East Asia. That area today includes parts of Kazakhstan, Kyrgyzstan, and northwest Xinjiang, China. The khanate nominally ruled over the area from the mid-14th century until the late 17th century.

Beginning in the mid-14th century a new khanate, in the form of a nomadic tribal confederacy headed by a member of the family of Chagatai, arose in the region of the Ili River. It is therefore considered to be a continuation of the Chagatai Khanate, but it is also referred to as the Moghul Khanate.

The Wusun (/ˈwuːsʌn/ WOO-sun) were an ancient semi-nomadic steppe people mentioned in Chinese records from the 2nd century BC to the 5th century AD.

The Wusun originally lived between the Qilian Mountains and Dunhuang (Gansu) near the Yuezhi. Around 176 BC the Xiongnu raided the lands of the Yuezhi, who subsequently attacked the Wusun, killing their king and seizing their land. The Xiongnu adopted the surviving Wusun prince and made him one of their generals and leader of the Wusun. Around 162 BC the Yuezhi were driven into the Ili River Valley in Zhetysu, Dzungaria and Tian Shan, which had formerly been inhabited by the Saka. The Wusun then resettled in Gansu as vassals of the Xiongnu. In 133–132 BC, the Wusun drove the Yuezhi out of the Ili Valley and settled the area.

Almaliq (Uyghur: ئالمالىق; Chinese: 阿力麻里; pinyin: Ālìmálǐ), also spelled Almalik, Almalig, was a medieval city in the Ili basin in present-day Huocheng County, Xinjiang, China along Kazakhstan border. A modern town named Alimali (阿力玛里) in Khorgas, adjacent to Huocheng, has no historical connections with the medieval town.

The Treaty of Saint Petersburg or Treaty of Ili was an unequal treaty between the Russian Empire and the Qing dynasty that was signed in Saint Petersburg, Russia, on 24 February [O.S. 12 February] 1881. It provided for the return to China of the eastern part of the Ili Basin region, also known as Zhetysu, which had been occupied by Russia since 1871 during the Dungan Revolt.