Chariot
Origins

The wheel may have been invented at several places, with early evidence found in Ukraine, Poland, Germany, and Slovenia. Evidence of wheeled vehicles appears from the mid 4th millennium BC near-simultaneously in the Northern Caucasus (Maykop culture), and in Central Europe. These earliest vehicles may have been ox carts. A necessary precursor to the invention of the chariot is the domestication of animals, and specifically domestication of horses – a major step in the development of civilization. Despite the large impact horse domestication has had in transport and communication, tracing its origins has been challenging. Evidence supports horses having been domesticated in the Eurasian Steppes, with studies suggesting the Botai culture in modern-day Kazakhstan were the first, about 3500 BCE. Others say horses were domesticated earlier than 3500 BCE in Eastern Europe (modern Ukraine and Western Kazakhstan), 6000 years ago.

The spread of spoke-wheeled chariots has been closely associated with early Indo-Iranian migrations. The earliest known chariots have been found in Sintashta culture burial sites, and the culture is considered a strong candidate for the origin of the technology, which spread throughout the Old World and played an important role in ancient warfare. It is also strongly associated with the ancestors of modern domestic horses, the DOM2 population (DOM2 horses originated from the Western Eurasia steppes, especially the lower Volga-Don, but not in Anatolia, during the late fourth and early third millennia BCE. Their genes may show selection for easier domestication and stronger backs). These Aryan people migrated southward into South Asia, ushering in the Vedic period around 1750 BCE. Shortly after this, about 1700 BCE, evidence of chariots appears in Asia-Minor.

The earliest fully developed spoke-wheeled horse chariots are from the chariot burials of the Andronovo (Timber-Grave) sites of the Sintashta-Petrovka Proto-Indo-Iranian culture in modern Russia and Kazakhstan from around 2000 BCE. This culture is at least partially derived from the earlier Yamna culture. It built heavily fortified settlements, engaged in bronze metallurgy on an industrial scale, and practiced complex burial rituals reminiscent of Hindu rituals known from the Rigveda and the Avesta. Over the next few centuries, the Andronovo culture spread across the steppes from the Urals to the Tien Shan, likely corresponding to the time of early Indo-Iranian cultures.

Not everyone agrees that the Sintashta culture vehicle finds are true chariots.

In 1996 Joost Crouwel and Mary Aiken Littauer wrote

Let us consider what is actually known of the Sintashta and Krivoe Ozero vehicles. At Sintashta, there remained only the imprints of the lower parts of the wheels in their slots in the floor of the burial chamber; Krivoe Ozero also preserved imprints of parts of the axle and naves. At Sintashta, the wheel tracks and their position relative to the walls of the tomb chamber limited the dimensions of the naves, hence the stability of the vehicle. Ancient naves were symmetrical, the part outside the spokes of equal length to that inside.The present reconstructions of the Sintashta and Krivoe Ozero vehicles above the axle level raise many doubts and questions, but one cannot argue about something for which there is no evidence. It is from the wheel track measurements and the dimensions and positions of the wheels alone that we may legitimately draw conclusions and these are alone sufficient to establish that the Sintashta-Petrovka vehicles would not be manoeuverable enough for use either in warfare or in racing.

Peter Raulwing and Stefan Burmeister consider the Sintashta and Krivoe Ozero finds from the steppe to be carts rather than chariots.

However, recent discoveries in the Eurasian steppe have provided fresh support to the claim that the chariot originated there, rather than in the Near East itself, and may be attributed to speakers of an Indo-Iranian (or Indo-Aryan) language. In particular, archaeological remains of horse gear and spoked wheeled vehicles have been found at the sites of Sintashta (Russia) and Krivoe Ozero (northern Kazakhstan), with calibrated radiocarbon dating to ca. 2000–1800. These finds, however, provide evidence of a two-wheeled spoked cart that does not fit the definition of the ancient Near Eastern chariot. Before these discoveries can help answer the question of where the chariot originated, thorough studies of the spoked wheeled vehicles and horse gear of the steppes, as well as of interconnections and transfer of knowledge, are necessary (cf. Epimachov and Korjakova in Fansa and Burmeister 2004).
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