e central government, which administered the regions through the garrisoning of troops and the appointment of outside governors (Frye 38-39; Kennedy, The Early Abbasid Caliphate 35-36; Kennedy, The Prophet and the Age of the Caliphs, 116-17, 124-25).
Iraqi Arab troops had been used to conquer Khurasan and many of them ended up settling in the region. But the central government of the Empire was relatively weak in this region and many of the cities governed themselves, their princes obligated only to pay taxes to the Umayyads. As a result, these local princes themselves collected taxes from the local inhabitants. In areas where the Arabs did not garrison troops, Arab settlers were forced to pay taxes to these local princes. In areas where the Arabs did govern, the governors were usually Syrians sent by the central government, depriving the local Arab settlers of the right to self-government. Additionally, non-Arab Muslims suffered the usual forms of discrimination by the Arabs. All of these factors contributed to the resentment against the Umayya
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