 Nyorai kuenderera mberi kweiyi ndima - Humambo hutsva hunotongwa nemaDacians hwakabuda mukutonga kwaDecebalus uyo akatonga kubva muna 87 AD. Mugore rokutanga rokutonga kwake, akakunda uto reRoma rakatumwa kuzorwisa Dacia mukupindura kupamba kwavakanga vapamba mudunhu reRoma reMoesia. Kunyange zvazvo vaRoma vakakunda Decebalus muHondo yeTapaemuna 88, akaita chibvumirano chorugare neUmambo hweRoma. Harina kungobvuma bedzi nzvimbo yaDecebalus sarex amicus kana kuti mambo mutsigiri, asi vaRoma vakamupawo mari yakawanda pamwe chete navagadziri vemabasa ose ane chokuita norugare nehondo, maererano naCassius Dio. Achishandisa chibvumirano chake nevaRoma, Decebalus akavandudza kudzivirira umambo hwake. Akawedzerawo kutonga kwake nharaunda dzakapoteredza mumakore gumi akatevera. Pashure pokukunda uku, umambo hwaDecebalus hwemadzinza akawanda hwakaganhurirwa neTisa, North Carpathians, Dniester uye Lower Danube, maererano naGábor Vékony. 