Kazakhstan,[d] officially the Republic of Kazakhstan,[e] is a landlocked country primarily in Central Asia, with a small portion of its territory in Eastern Europe.[f] It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbekistan to the south, and Turkmenistan to the southwest, with a coastline along the Caspian Sea. Its capital is Astana, while the largest city and leading cultural and commercial hub is Almaty. Kazakhstan is the world's ninth-largest country by land area and the largest landlocked country. It has a population of 20 million and one of the lowest population densities in the world, at fewer than 6 people per square kilometre (16 people/sq mi).[15] Ethnic Kazakhs constitute a majority, while ethnic Russians form a significant minority. Officially secular, Kazakhstan is a Muslim-majority country with a sizeable Christian community.
Kazakhstan has been inhabited since the Paleolithic era. In antiquity, various nomadic Iranian peoples such as the Saka, Massagetae, and Scythians dominated the territory, with the Achaemenid Persian Empire expanding towards the southern region. Turkic nomads entered the region from as early as the sixth century. In the 13th century, the area was subjugated by the Mongol Empire under Genghis Khan. Following the disintegration of the Golden Horde in the 15th century, the Kazakh Khanate was established over an area roughly corresponding with modern Kazakhstan. By the 18th century, the Kazakh Khanate had fragmented into three jüz (tribal divisions), which were gradually absorbed and conquered by the Russian Empire; by the mid-19th century, all of Kazakhstan was nominally under Russian rule.[16] Following the 1917 Russian Revolution and subsequent Russian Civil War, the territory was reorganized several times. In 1936, its modern borders were established with the formation of the Kazakh Soviet Socialist Republic within the Soviet Union. Kazakhstan was the last constituent republic of the Soviet Union to declare independence in 1991 during its dissolution.
The Kazakh territory was a key constituent of the Eurasian trading Steppe Route, the ancestor of the terrestrial Silk Roads. Archaeologists believe that humans first domesticated the horse in the region's vast steppes. During recent prehistoric times, Central Asia was inhabited by groups such as the possibly Indo-European Afanasievo culture,[30] later early Indo-Iranian cultures such as Andronovo,[31] and later Indo-Iranians such as the Saka and Massagetae.[32][33] Other groups included the nomadic Scythians and the Persian Achaemenid Empire in the southern territory of the modern country. The Andronovo and Srubnaya cultures, precursors to the peoples of the Scythian cultures, were found to harbor mixed ancestry from the Yamnaya Steppe herders and peoples of the Central European Middle Neolithic.[34]
In 1465, the Kazakh Khanate emerged as a result of the dissolution of the Golden Horde. Established by Janibek Khan and Kerei Khan, it continued to be ruled by the Turco-Mongol clan of Tore (Jochid dynasty). Throughout this period, traditional nomadic life and a livestock-based economy continued to dominate the steppe. In the 15th century, a distinct Kazakh identity began to emerge among the Turkic tribes. This was followed by the Kazakh War of Independence, where the Khanate gained its sovereignty from the Shaybanids. The process was consolidated by the mid-16th century with the appearance of the Kazakh language, culture, and economy.
In the first half of the 18th century, the Russian Empire constructed the Irtysh line [ru], a series of forty-six forts and ninety-six redoubts, including Omsk (1716), Semipalatinsk (1718), Pavlodar (1720), Orenburg (1743) and Petropavlovsk (1752),[39] to prevent Kazakh and Oirat raids into Russian territory.[40] In the late 18th century the Kazakhs took advantage of Pugachev's Rebellion, which was centred on the Volga area, to raid Russian and Volga German settlements.[41] In the 19th century, the Russian Empire began to expand its influence into Central Asia. The "Great Game" period is generally regarded as running from approximately 1813 to the Anglo-Russian Convention of 1907. The tsars effectively ruled over most of the territory belonging to what is now the Republic of Kazakhstan.