City-states and Imperial period

Main articles: Succession to Muhammad and Caliphate

After Muhammed died, a series of Caliphs governed the Islamic State: Abu Bakr (632-634), Umar ibn al-Khattab (Umar І, 634-644), Uthman ibn Affan, (644-656), and Ali ibn Abi Talib (656-661). These leaders are known as the "Rashidun" or "rightly guided" Caliphs in Sunni Islam. They oversaw the initial phase of the Muslim conquests, advancing through Persia, Egypt, the Middle East and North Africa. As it is well known that Arabic language is written without vowels, and when Qur'an reached the non Arabic speakers, people began having different dielects and phonics which was changing the exact meaning of verses in the Qur'an. This was brought to the notice of Uthman Ibn Affan. Begun in the time of Uthman ibn Affan, the compilation of the Qur'an was finished sometime between 650 and 656, Uthman sent copies to the different centers of the expanding Islamic empire. From then on, thousands of Muslim scribes began copying the Qur'an.^[5] Afterwards, factions arose and the last three Rashidun caliphs were murdered. The death of Uthman was followed by a civil war known as the First Fitna, and the succession to Ali ibn Abi Talib was disputed, leading to the split between the Sunni and Shia sects, and later to competing caliphates when the descendants of Muhammad through his daughter Fatimah and Ali set up separate Fatimid societies.

After the peace treaty with Ali's son, Hassan ibn Ali, and the suppression of the revolt of the Kharijites,^[6] Muawiyah I proclaimed himself Caliph in 661 and began consolidating power.^[7] In 663, a new Kharijite revolt resulted in the death of their chief.^[7] In 664, Muawiyah and Ziyad ibn Abi Sufyan reached an agreement: the Caliph recognised Ziyad as a brother and appointed him governor at Basra. Ziyad took the name ibn Abi Sufyan. Muawiyah arranged for his son Yazid I to be appointed caliph on his death, which came in 680. Husain ibn Ali, by then Muhammad's only living grandson, refused to swear allegiance to Yazid. He was killed in the Battle of Karbala the same year, an event still mourned by Muslims on the Day of Ashura. Unrest continued in the Second Fitna, but Muslim rule was extended under Muawiyah to Rhodes, Crete, Kabul, Bukhara, and Samarkand, and expanded in North Africa. In 664, Arab armies conquered Kabul,^[8] and in 665 pushed into the Maghreb.^[9]

Succession and Umayyad accession

Consult particular article for details

The Umayyad dynasty (or Ommiads), whose name derives from Umayya ibn Abd Shams, the great-grandfather of the first Umayyad caliph, ruled from 661 to 750. Although the Umayyad family came from the city of Mecca, Damascus was the capital. After the death of Abdu'l-Rahman ibn Abu Bakr in 666,^[10][11] Muawiyah I consolidated his power. Muawiyah I moved his capital to Damascus from Medina, which led to profound changes in the empire. In the same way, at a later date, the transfer of the Caliphate from Damascus to Baghdad marked the accession of a new family to power.

The Umayyads viewed Islam as a religion exclusively for Arabs. The Umayyads paid for the state by taxing the Dhimmis. A non-Arab who wanted to convert was supposed to first become a client of an Arab tribe. Even after conversion, non-Arabs (mawali) did not achieve social and economic equality.

At its largest extent, the Umayyad dynasty covered more than 5,000,000 square miles (13,000,000 km²) making it one of the largest empires the world had yet seen,^[12] and the fifth largest contiguous empire ever. After the Umayyads were overthrown by the Abbasid Caliphate, they fled across North Africa to Al-Andalus, where they established the Caliphate of Córdoba, which lasted until 1031 with the Fitna of al-Ándalus.

The Mosque of Uqba (Great Mosque of Kairouan), founded by the Umayyad general Uqba Ibn Nafi in 670 AD, is the oldest and most prestigious mosque in the Muslim West; its present form dates from the 9th century, Kairouan, Tunisia.

Muawiyah beautified Damascus, and developed a court to rival that of Constantinople. He expanded the frontiers of the empire, reaching the edge of Constantinople at one point, though the Byzantines drove him back and he was unable to hold any territory in Anatolia. Sunni Muslims credit him with saving the fledgling Muslim nation from post-civil war anarchy. However, Shia Muslims accuse him of instigating the war, weakening the Muslim nation by dividing the Ummah, fabricating self-aggrandizing heresies^[13] slandering the Prophet's family^[14] and even selling his Muslim critics into slavery in the Byzantine empire.^[15] One of Muawiyah's most controversial and enduring legacies was his decision to designate his son Yazid as his successor. According to Shi'a doctrine, this was a clear violation of the treaty he made with Hasan ibn Ali.

During the caliphate of Yazid, Muslims suffered several setbacks. In 682 AD Yazid restored Uqba ibn Nafi as the governor of North Africa. Uqba won battles against the Berbers and Byzantines.^[16] From there Uqba marched thousands of miles westward towards Tangier, where he reached the Atlantic coast, and then marched eastwards through the Atlas Mountains.^[17] With about 300 cavalrymen, he proceeded towards Biskra where he was ambushed by a Berber force under Kaisala. Uqba and all his men died fighting. The Berbers attacked and drove Muslims from north Africa for a period.^[18] They also lost supremacy at sea, and had to abandon the islands of Rhodes and Crete.

Dome of the Rock The Mosque of Omar, on Ash-Haram Al-Sharif (the Temple Mount), built by Abd al-Malik; completed at the end of the Second Fitna.

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The period under Muawiya II was marked by civil wars (Second Fitna). This would ease in the reign of Abd al-Malik ibn Marwan, a well-educated and capable ruler. Despite the many political problems that impeded his rule, all important records were translated into Arabic. In his reign, a currency for the Muslim world was minted. This led to war with the Byzantine Empire under Justinian II (Battle of Sebastopolis) in 692 in Asia Minor. The Byzantines were decisively defeated by the Caliph after the defection of a large contingent of Slavs. The Islamic currency was then made the exclusive currency in the Muslim world. He reformed agriculture and commerce. Abd al-Malik consolidated Muslim rule and extended it, made Arabic the state language, and organized a regular postal service.

Al-Walid I began the next stage of Islamic conquests. Under him the early Islamic empire reached its farthest extent. He reconquered parts of Egypt from the Byzantine Empire and moved on into Carthage and across to the west of North Africa. Muslim armies under Tariq ibn Ziyad crossed the Strait of Gibraltar and began to conquer Spain using North African Berber armies. The Visigoths of Spain were defeated when the Umayyad conquered Lisbon. Spain was the farthest extent of Islamic control of Europe (they were stopped at the Battle of Tours). In the east, Islamic armies under Muhammad bin Qasim made it as far as the Indus Valley. Under Al-Walid, the caliphate empire stretched from Spain to India. Al-Hajjaj bin Yousef played a crucial role in the organization and selection of military commanders. Al-Walid paid great attention to the expansion of an organized military, building the strongest navy in the Umayyad era., This tactic was crucial for the expansion to Spain. His reign is considered to be the apex of Islamic power.

Sulayman ibn Abd al-Malik was hailed as caliph the day al-Walid died. He appointed Yazid ibn al-Muhallab governor of Mesopotamia. Sulayman ordered the arrest and execution of the family of al-Hajjaj, one of two prominent leaders (the other was Qutaibah bin Muslim) who had supported the succession of al-Walid's son Yazid, rather than Sulayman. Al-Hajjaj had predeceased al-Walid, so he posed no threat. Qutaibah renounced allegiance to Sulayman, though his troops rejected his appeal to revolt. They killed him and sent his head to Sulayman. Sulayman did not move to Damascus on becoming Caliph, remaining in Ramla. Sulayman sent Maslamah ibn Abd al-Malik to attack the Byzantine capital (siege of Constantinople). The intervention of Bulgaria on the Byzantine side proved decisive. The Muslims sustained heavy losses. Sulayman died suddenly in 717.

Yazid II came to power on the death of Umar II. Yazid fought the Kharijites, with whom Umar had been negotiating, and killed the Kharijite leader Shawdhab. In Yazid's reign, civil wars began in different parts of the empire.^[19] Yazid expanded the Caliphate's territory into the Caucasus, before dying in 724. Inheriting the caliphate from his brother, Hisham ibn Abd al-Malik ruled an empire with many problems. He was effective in addressing these problems, and in allowing the Umayyad empire to continue as an entity. His long rule was an effective one, and renewed reforms introduced by Umar II. Under Hisham's rule, regular raids against the Byzantines continued. In North Africa, Kharijite teachings combined with local restlessness to produce a significant Berber revolt. He was also faced with a revolt by Zayd bin Ali. Hisham suppressed both revolts. The Abbasids continued to gain power in Khurasan and Iraq. However, they were not strong enough to make a move yet. Some were caught and punished or executed by eastern governors. The Battle of Akroinon, a decisive Byzantine victory, was during the final campaign of the Umayyad dynasty.^[20] Hisham died in 743.

Al-Walid II saw political intrigue during his reign. Yazid III spoke out against his cousin Walid's "immorality" which included discrimination on behalf of the Banu Qays Arabs against Yemenis and non-Arab Muslims, and Yazid received further support from the Qadariya and Murji'iya (believers in human free will).^[21] Walid was shortly thereafter deposed in a coup.^[22] Yazid disbursed funds from the treasury and acceded to the Caliph. He explained that he had rebelled on behalf of the Book of Allah and the Sunna. Yazid reigned for only six months, while various groups refused allegiance and dissident movements arose, after which he died. Ibrahim ibn al-Walid, named heir apparent by his brother Yazid III, ruled for a short time in 744, before he abdicated. Marwan II ruled from 744 until he was killed in 750. He was the last Umayyad ruler to rule from Damascus. Marwan named his two sons Ubaydallah and Abdallah heirs. He appointed governors and asserted his authority by force. Anti-Umayyad feeling was very prevalent, especially in Iran and Iraq. The Abbasids had gained much support. Marwan's reign as caliph was almost entirely devoted to trying to keep the Umayyad empire together. His death signalled the end of Umayyad rule in the East, and was followed by the massacre of Umayyads by the Abbasids. Almost the entire Umayyad dynasty was killed, except for the talented prince Abd ar-Rahman who escaped to Spain and founded a dynasty there.