A chariot is a type of cart driven by a charioteer, usually using horses to provide rapid motive power. The oldest known chariots have been found in burials of the Sintashta culture in modern-day Chelyabinsk Oblast, Russia, dated to c. 2000 BCE. The critical invention that allowed the construction of light, horse-drawn chariots was the spoked wheel. The chariot was a fast, light, open, two-wheeled conveyance drawn by two or more horses that were hitched side by side, and was little more than a floor with a waist-high guard at the front and sides. It was initially used for ancient warfare during the Bronze and Iron Ages, but after its military capabilities had been superseded by light and heavy cavalries, chariots continued to be used for travel and transport, in processions, for games, and in races. Etymology The word "chariot" comes from the Latin term carrus, a loanword from Gaulish. In ancient Rome and some other ancient Mediterranean civilizations, a biga required two horses, a triga three, and a quadriga four. Origins at the Eurasian steppe The invention of the wheel used in transportation most likely took place in the Eurasian Steppes of modern-day Russia and Ukraine. 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, specifically 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 in Eastern Europe (modern Ukraine and Western Kazkhstan), 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