 Nyorai mberi kweiyi ndima - Inonzi Bactria yakanaka, yakashongedzwa nemireza neAvesta, dunhu iri ndeimwe yenyika gumi nenhanhatu dzakakwana dzeIran idzo mwari mukuru Ahura Mazda akange agadzira. Imwe yenzvimbo dzekutanga dzeZoroastrianism uye guta guru remadzimambo eKayanian eIran, Bactria inotaurwa muBehistun Inscription yaDharius Mukuru seimwe yemasangano eAchaemenid Empire; yaive satrapy yakasarudzika uye yaitongwa nemuchinda wekorona kana mugari wenhaka anotarisirwa. Bactria yaiva nzvimbo yekurwisa kwevaIranian vaipinda muMacedonia mushure mekuparara kweHumambo hweAchaemenidmuzana ramakore rechina B.C.E., asi pakupedzisira rakawira kuna Alexander Mukuru. Pashure porufu rwomukunda weMakedhonia, Bactria yakabatanidzwa nomukuru wehondo yake, Seleucus I. 