 Complete the following phrase:  Due to Kavadhs actions, his reign is seen as a turning point in Sasanian history, and has been argued by some scholars as playing a key role in the fall of the Sasanian Empire. The overthrow and death of Khosrow culminated in the chaotic Sasanian civil war of 628632, with the most powerful members of the nobility gaining full autonomy and starting to create their own government. The hostilities between the Persian Parsig and Parthian Pahlav noble-families were also resumed, which split up the wealth of the nation. With the agreement of the Iranian nobles, he then made peace with the victorious emperor Heraclius, which allowed the Byzantines to regain all their lost territories, their captured soldiers, a war indemnity, along with the True Cross and other relics that were 