power and high social status. Metaphorically, this kind of elite can be called Sheriffs of the Bronze Age" said Igor Chechushkov. Burials The Andronovo dead were buried in timber or stone chambers under both round and rectangular kurgans (tumuli). Burials were accompanied by livestock, wheeled vehicles, cheek-pieces for horses, and weapons, ceramics and ornaments. Among the most notable remains are the burials of chariots, dating from around 2000 BC and possibly earlier. The chariots are found with paired horse-teams, and the ritual burial of the horse in a "head and hooves" cult has also been found. Some Andronovo dead were buried in pairs, of adults or adult and child. At Kytmanovo in Russia between Mongolia and Kazakhstan, dated 1746–1626 BC, a strain of Yersinia pestis was extracted from a dead woman's tooth in a grave common to her and to two children. This strain's genes express flagellin, which triggers the human immune response. However, by contrast with other prehistoric Yersinia pestis bacteria, the strain does so weakly; later, historic plague does not express flagellin at all, accounting for its virulence. The Kytmanovo strain was therefore under selection toward becoming a plague (although it was not the plague). The three people in that grave all died at the same time, and the researcher believes that this para-plague is what killed them. Ethnolinguistic affiliation with Indo-Iranians It is almost universally agreed among scholars that the Andronovo culture was Indo-Iranian. It is credited with the invention of the spoke-wheeled chariot around 2000 BC, if we include the Sintashta culture where the oldest known chariots have been found. The association between the Andronovo culture and the Indo-Iranians is corroborated by the distribution of Iranian place-names across the Andronovo horizon and by the historical evidence of dominance by various Iranian peoples, including Saka (Scythians), Sarmatians and Alans, throughout the Andronovo horizon during the 1st millennium BC. Sintashta on the upper Ural River, noted for its chariot burials and kurgans containing horse burials, is considered the type site of the Sintashta culture, forming one of the earliest parts of the "Andronovo horizon". It is conjectured that the language spoken was still in the Proto-Indo-Iranian stage. Comparisons between the archaeological evidence of the Andronovo and textual evidence of Indo-Iranians (i. e. the Vedas and the Avesta) are frequently made to support the Indo-Iranian identity of the Andronovo. The modern explanations for the Indo-Iranianization of Greater Iran and