<prompt> Translate the following text to SwahiliBy 600 b.c. , the Indo-Aryans had formed monarchies in the Ganga plain, surrounded by smaller tribes resisting the Brahmanic orthodoxy and its authoritarianism.  <response>: Kufikia mwaka 600 KK, Waindonia walikuwa wameunda milki katika bonde la Ganges, wakiwa wamezungukwa na makabila madogo yaliyopinga utawala wa Brahman na utawala wake wa kimabavu. 