Mawia or the Aramean-Arab Palmyrene Empire. The Rashidun state was a completely new state and unlike the Arab kingdoms of its century such as the Himyarite, Lakhmids or Ghassanids. Umayyad era (661–750 & 756–1031) In 661, the Rashidun Caliphate fell into the hands of the Umayyad dynasty and Damascus was established as the empire's capital. The Umayyads were proud of their Arab identity and sponsored the poetry and culture of pre-Islamic Arabia. They established garrison towns at Ramla, Raqqa, Basra, Kufa, Mosul and Samarra, all of which developed into major cities. Caliph Abd al-Malik established Arabic as the Caliphate's official language in 686. This reform greatly influenced the conquered non-Arab peoples and fueled the Arabization of the region. However, the Arabs' higher status among non-Arab Muslim converts and the latter's obligation to pay heavy taxes caused resentment. Caliph Umar II strove to resolve the conflict when he came to power in 717. He rectified the disparity, demanding that all Muslims be treated as equals, but his intended reforms did not take effect, as he died after only three years of rule. By now, discontent with the Umayyads swept the region and an uprising occurred in which the Abbasids came to power and moved the capital to Baghdad. Umayyads expanded their Empire westwards capturing North Africa from the Byzantines. Before the Arab conquest, North Africa was conquered or settled by various people including Punics, Vandals and Romans. After the Abbasid Revolution, the Umayyads lost most of their territories with the exception of Iberia. Their last holding became known as the Emirate of Córdoba. It wasn't until the rule of the grandson of the founder of this new emirate that the state entered a new phase as the Caliphate of Córdoba. This new state was characterized by an expansion of trade, culture and knowledge, and saw the construction of masterpieces of al-Andalus architecture and the library of Al-Ḥakam II which housed over 400,000 volumes. With the collapse of the Umayyad state in 1031 CE, Islamic Spain was divided into small kingdoms. Abbasid era (750–1258 & 1261–1517) The Abbasids were the descendants of Abbas ibn Abd al-Muttalib, one of the youngest uncles of Muhammad and of the same Banu Hashim clan. The Abbasids led a revolt against the Umayyads and defeated them in the Battle of the Zab effectively ending their rule in all parts of the Empire with the exception of al-Andalus.