The Yarubids, harrying Portuguese possessions on the Indian coast, embark on expansion overseas-to Mombasa in 1698, then to Pemba, Zanzibar, and Kilwa, all in East Africa.

The Omanis, who engage in the slave trade, become the supreme power on the coastal regions of the Indian Ocean, and European merchants fear marauding Omani fleets.

Because of the Omanis' expulsion of the Portuguese from the East African coast, the region's numerous small states owe allegiance to Oman.

Political alignment in Oman crystallizes between the two major tribes, with the Banu Ghafir (Ghafiri) aligned against the Banu Hina (Hinawi).

The Bani Hina, or Hinawis, had migrated to Oman in CE 200 following the catastrophe caused by the failure of the Marib Dam.

There were two distinct groups of Yameni descent when the tribes migrated to Oman: one was the Azdites, which included Ibadi and Hinawi creeds, while the second group of Nizari (Nejdi) adhered to the Sunni and Ghāfirī creeds.

The Ghafiri confederation of the Ibāḍī Imamate had been established in the mid eighth century, when election of the Ibadi Imamate was been secured by an agreement that included Hinawis and Ghafiri leadership.

Frequent conflicts between the two groups come to the fore during the election of the Imamate in 1719, which is contested by one Hinawi and one Ghafiri candidate.

Dynastic succession in Oman leads to the nomination of Saif ibn Sultan II, who has not yet reached puberty by 1719.

His candidacy prompts a rivalry among the ulama and a civil war between the Hinawi and the Ghafiri, with the Ghafiri supporting Saif ibn Sultan II.

The various parties in Oman begin to solicit support from outside powers in the 1730s.

Saif bin Sultan II, with his power dwindling, eventually asks for help against his rival—his cousin Bal'arab bin Himyar, Imam of the Omani interior—from Nader Shah of Persia.

A Persian force arrives in March 1737 and, joined by Saif bin Sultan, marches to Az Zahirah, where they meet and rout the forces of Bal'arab bin Himyar.

The Persians advance through the interior, capturing towns, killing, looting and taking slaves, then reembark for Persia with their plunder.

Bal'arab bin Himyar, defeated in 1737, agrees to renounce his claim to be Imam.

Saif bin Sultan II is undisputed ruler of Oman for a few years after this, but continues his self-indulgent life, which turns the tribes against him.

Sultan bin Murshid, another member of the Yaruba family is proclaimed Imam in February 1742.

Installed at Nakhal, Sultan bin Murshid begins to hound Saif bin Sultan, who again appeals to the Persians for help and promises to cede Sohar to them.

A Persian expedition arrives at Julfar around October 1742.

They besiege Sohar and send forces to Muscat, but are unable to take either place.

Saif is tricked in 1743 into letting the Persians take Fort Al Jalali and Fort Al-Mirani, which guards the harbor of Muscat; he dies soon after.

The Imam Sultan bin Murshid is mortally wounded in mid-1743 under the walls of Sohar.

Bal'arab bin Himyar is elected Imam in his place.

The Yarubid family eventually calls in an army under Persia’s new ruler Nader Shah, whose invasion of the country in 1737 reestablishes Iranian influence on the Omani coast.

The Al Sa'id, an Ibadi family from one of the coastal cities, in 1742 persuades the local population to help it expel the Iranians; this puts the leader, Ahmad ibn Sa'id Al Sa'id, in control of the Omani coast.

The Middle East: 1744–1755 CE

Consolidation of the Wahhabi-Saudi Alliance

Between 1744 and 1755, the alliance between Muhammad ibn Abd al Wahhab and Muhammad ibn Saud significantly solidifies, transforming Ad Diriyah into a powerful political and religious center in central Arabia. United by a mutual commitment to the strict reformist Islamic doctrine of Wahhabism, they undertake a campaign to unify surrounding tribes under their authority. Muhammad bin Saud provides the essential political and military leadership, while Muhammad ibn Abd al Wahhab’s rigorous interpretation of Islam offers a powerful ideological framework. In 1744, they formally cement their alliance through a traditional Muslim oath, pledging mutual support to establish a state governed strictly by Islamic principles. This pivotal partnership sets the foundation for a future Saudi state, emphasizing the Al Saud family's clearly defined religious mission and political authority.

Turmoil and Dynastic Change in Oman

In Oman, political instability deepens following the collapse of Yarubid authority. After the death of Saif bin Sultan II, Ahmad bin Said al-Busaidi, governor of the Suhar garrison, emerges as a strong contender for leadership. Ahmad bin Said successfully drives out the last Persian forces from Oman in 1747, capitalizing on internal conflicts arising from Nader Shah's declining Persian empire. He decisively assumes control, culminating in his election as Imam of Oman, Zanzibar, Pemba, and Kilwa in 1749, marking the establishment of the Al Bu Sa'id dynasty. Ahmad shifts the capital from the traditional Ibadi stronghold of Ar Rustaq to Muscat, significantly distancing his rule from traditional Ibadi political structures.

Decline of Nader Shah and Persian Instability

The period sees the rapid decline and eventual assassination of Nader Shah in 1747, causing severe instability throughout Persia. His death plunges the region into factional conflict, significantly reducing Persian influence in neighboring areas, including the Persian Gulf and Iraq. The resulting power vacuum heightens regional instability, facilitating local tribal resurgence and diminishing centralized governance.

Ottoman Authority and Growing Tribal Autonomy

Ottoman control continues to wane, increasingly challenged by tribal autonomy and internal dissent. Powerful tribal confederations such as the Muntafiq and Bani Lam assert greater independence, severely limiting Ottoman influence. The Baban Dynasty in Iraqi Kurdistan fortifies its position, maintaining autonomy and resisting direct Ottoman governance. These tribal dynamics reinforce fragmented control, severely constraining Ottoman central authority.

Economic and Social Dynamics in the Persian Gulf

Despite ongoing political turbulence, economic conditions on the Arab side of the Persian Gulf remain comparatively stable due to trade, pearl harvesting, and limited agriculture. This economic vitality attracts tribes from the Arabian interior, notably the Al Thani, who settle in Qatar during the early to mid-eighteenth century. Originally Bedouin, the Al Thani transition to fishing, pearling, and cultivation of date palms, playing a crucial role in the economic landscape of the region.

Legacy of the Era

From 1744 to 1755, significant political realignments shape the Middle East profoundly. The Wahhabi-Saudi alliance consolidates power in central Arabia, laying firm foundations for Saudi influence. Oman undergoes a critical dynastic shift with the rise of the Al Bu Sa'id dynasty, enhancing internal cohesion and reducing external interference. Persian instability following Nader Shah’s assassination intensifies regional volatility, while persistent tribal autonomy severely curtails Ottoman control. These intertwined developments profoundly impact subsequent decades, setting the stage for continued political, religious, and social transformations.

Ahmad bin Said al-Busaidi, governor of the Suhar garrison, elected in 1743 as a rival Imam, succeeds in 1747 in destroying the last Persian force in Oman.

The Ghafiris and Hinawis confederations exist during the civil wars in Persia that had resulted from Nadir Shah's intervention in the period between 1737-38 and 1742-44.

The confederations have long played a role in the political history of Oman, with Omani tribes being affiliated with one or the other confederation.

Because of the Ghafiris' support of the late Saif ibn Sultan II, a clash occurs between the two confederations in 1748 in which leaders of both tribes die.

Ahmad bin Said becomes undisputed ruler of Oman when Bal'arab bin Himyar dies in 1749: displacing the exhausted Ya'rubids, Ahmad is elected imam of Oman and of Zanzibar, Pemba, and Kilwa, thus establishing the Al Bu Sa'id dynasty that continues to rule Oman.

He distances himself from Ibadi traditions by moving the capital from Ar Rustaq, a traditional Ibadi center in the interior, to ...

...the trading center of Muscat.

The Middle East: 1756–1767 CE

Expansion of the Saudi-Wahhabi State

From 1756 to 1767, the Saudi-Wahhabi alliance, forged by Muhammad ibn Saud and Muhammad ibn Abd al Wahhab, continues to strengthen and expand its influence throughout central Arabia. Driven by the militant interpretation of Wahhabism, Saudi forces successfully annex surrounding tribes and settlements, spreading their austere version of Islam. Muhammad ibn Saud, alongside his son Abdul Aziz, vigorously leads armies into Najdi towns and villages, eradicating popular and Shia practices and unifying the tribes under their banner. By 1765, Wahhabi authority is established firmly over most of Najd, significantly threatening regional powers such as the Ottoman Empire and its local allies. Abdul Aziz continues this aggressive territorial expansion and ideological consolidation following Muhammad ibn Saud's death in 1765.

Stabilization and Economic Growth in Oman

In Oman, Ahmad bin Said al-Busaidi consolidates his rule, firmly establishing internal control after decades of instability. Ahmad emerges as undisputed ruler following the death of rival Imam Bal'arab bin Himyar in 1749. He distances himself from traditional Ibadi centers by moving the capital from Ar Rustaq to the bustling commercial port of Muscat, significantly reviving maritime trade. Under his leadership, Oman experiences notable economic rejuvenation, asserting its maritime influence in the Persian Gulf and Indian Ocean. His reign sees Muscat revitalized as a pivotal trading hub, marking a strategic shift towards commercial prosperity.

Persian Fragmentation and Regional Impact

The fragmentation of Persian authority following Nader Shah's assassination continues to severely impact regional stability. Mohammad Hasan Khan, leader of the Qajar tribe, extends his influence over Astarabad, Mazandaran, and Gilan amidst weakening central Persian authority. These internal divisions exacerbate instability across neighboring territories, creating opportunities for tribal and regional authorities in Iraq and the Persian Gulf to assert their autonomy. This declining Persian influence reshapes Gulf politics, fostering increased local governance and autonomy.

Ottoman Control and Tribal Independence

Ottoman authority remains compromised as local tribal autonomy increasingly challenges central governance. Tribes such as the Muntafiq and Bani Lam in southern Iraq, and the Kurdish Baban Dynasty in the north, further entrench their independence. Ottoman attempts to reassert control over these autonomous regions largely fail, reinforcing fragmented and decentralized rule throughout their Arab territories. This dynamic encourages local governance structures that resist Ottoman administrative centralization.

Prosperity and Tribal Settlement in the Persian Gulf

Economic prosperity continues in the Persian Gulf due to robust pearl harvesting, agriculture, and trade. The Al Khalifa and Al Jalahima sections of the Bani Utub tribe migrate from Kuwait to Qatar's northwest coast, establishing the prosperous trading and pearling settlement of Az Zubarah in 1766. Meanwhile, tribes such as the Al Thani further transition from nomadic life to settled communities involved in fishing, pearling, date cultivation, and trade. The popularity of Wahhabism among tribes such as the Al Thani heightens tensions, particularly with the Al Khalifa, who reject the movement. This tribal migration and settlement enhance the Gulf region's economic and social landscape, reinforcing its importance as a vibrant commercial and cultural crossroads.

Legacy of the Era

Between 1756 and 1767, the Middle East experiences profound political consolidation and economic rejuvenation, particularly in central Arabia and Oman. The Saudi-Wahhabi alliance expands its territorial and ideological reach, significantly reshaping regional religious and political dynamics. Oman stabilizes and economically prospers under Ahmad bin Said, emerging as a vital maritime power. Persian fragmentation deepens regional decentralization, while persistent tribal autonomy increasingly challenges Ottoman rule. These transformative developments lay critical foundations for subsequent political, economic, and social evolutions across the Middle East.