Indigenous Aryans were inter-related, and the notion of biological race came to the forefront The "Aryan race," the presumed identity of Indo-European language speakers was prominent among such races, which was seen to be further subdivided into "European Aryans" and "Asian Aryans," each with their own homelands. Max Mueller, who translated the Rigveda during 1849–1874, postulated an original homeland for all Aryans in central Asia, from where a northern branch was believed to have migrated to Europe and a southern branch came to India and Iran. The Aryans were fair-complexioned Indo-European speakers who conquered the dark-skinned "dasas" of India. The upper castes,
Name of Croatia the derivation of Proto-Slavic *xъrvatъ from the Old Persian "xaraxwat-", attested by the Old Iranian toponym "Harahvait-", the native name of Arachosia. "Arachosia" is the Latinized form of Ancient Greek Ἀραχωσία ("Arachosíā"); in Old Persian inscriptions, the region is referred to as "" (). In Indo-Iranian it actually means "one that pours into ponds", which derives from the name of the Sarasvati River of Rigveda. However, although the somewhat suggestive similarity, the connection to the name of Arachosia is etymologically incorrect. The first etymological thesis about the name of the Croats stems from Constantine Porphyrogennetos (tenth century), who connected the