Mamluk and Ottoman influence
Although the Yemeni Rasūlids sometimes disputed with the Mamluks the overlordship of the Holy Cities, the Mamluks generally prevailed. Egyptians and Meccans attacked al-Mujāhid the Rasūlid on a pilgrimage in 1350, and he was held prisoner in Egypt though released later.
The Mamluks
During the 14th and 15th centuries the Mamluks became the dominant power, maintaining a political agent in the Hejaz and a body of cavalry in Mecca. Eventually they made or unmade the sharifian rulers, though the local Egyptian commander’s policy sometimes ran counter to that of Cairo. From the mid-15th century the Mamluks took charge of the customs at Jeddah, Mecca’s port, allotting a portion of the revenue to the pasha of that port. Sharif Muḥammad ibn Barakāt (ruled 1425–53), however, received one-quarter of the value of all wrecked ships, one-quarter of all gifts arriving from abroad for the Meccans, and one-tenth of all imported goods. About half his income was distributed among the leading sharifian families.
By the mid-15th century the foundering of the Rasūlid dynasty in Yemen made way for the Ṭāhirids; about the same time the Kathīrī tribe of southeastern Arabia controlled Hadhramaut on behalf of the new dynasty.
The beginning of the 16th century witnessed Portuguese penetration of the Indian Ocean and the Red Sea. Though they failed to capture Aden, the Portuguese blockaded the Indian trade routes to Europe via the Persian Gulf and Red Sea, eventually causing severe, lasting damage to the economy of Muslim Middle Eastern countries.
The Ottomans
In 1517 the Ottoman sultan Selim I conquered Egypt and proclaimed the Hejaz part of the Ottoman dominions. Sharif Barakāt II of Mecca sent his son to negotiate at the Ottoman court and was confirmed as lord of the Holy Cities and Jeddah, subject to recognizing the Ottoman sultan as overlord. Selim’s successor, Süleyman I the Magnificent, at the zenith of Ottoman power, munificently subsidized the Holy Cities, devoting large sums to new building.
In Yemen the Mamluks of Zabīd and Taʿizz acknowledged Ottoman authority, and Ottomans took over naval operations against the Portuguese in the Red Sea and Indian Ocean. They seized Aden and forced the Yemenis into the mountains, capturing Sanaa and Shahārah. Ultimately, however, the Yemenis drove them back into the Tihāmah. The Ottomans adopted Mocha (Al-Mukhā) in southern Yemen as their base, and Aden declined in importance. After conquering Iraq in 1534–36, the Ottomans could operate in the Persian Gulf against the Portuguese, who had taken Hormuz and Muscat in 1507 and Bahrain in 1521 and freely harried the Arabian coasts.
The Ottomans reached as far as Al-Ḥasā by 1550 as they sought to curb Portuguese expansion. With Ottoman help, local merchants partially revived the spice trade, especially in pepper, but the Sunni Banū Khālid expelled Ottoman forces in 1670. The Portuguese maintained themselves in Muscat until 1649, although they could hold Bahrain only until 1602, when they were expelled by Ṣafavid Iran, which ruled there until 1717. Many Bahraini Shiʿi scholars in the 17th century moved to Iran, where they led in the development of theology in Shiʿism.
Coastal Arabia was coming into direct contact with other Christian European maritime nations, which had begun their commercial penetration of the Indian Ocean. The Dutch, English, and French followed the Portuguese. The Western nations traded with Yemen through Mocha, whose coffee trade began in the 17th century; later the Europeans opened trading stations, or “factories,” there.
By 1635 the Zaydīs of Yemen, supported by the northern tribes, had expelled the Ottomans, and the Zaydīs had their first great, if short-lived, expansion when their tribes moved into much of southern Arabia. The broken terrain made it impossible for them to maintain their supremacy, and local tribes drove out Zaydī garrisons by about the second decade of the 18th century.
In the 17th century Mecca and Medina saw a sharing of power between the locally autonomous sharifs and Ottoman Sunni governors. Mecca was important in the spread and development of Islamic theology, even for Shiʿi thinkers, while the pilgrimage reinforced a common Muslim identity among the far-flung and diverse Muslim communities of the world. In the late 17th and 18th centuries, however, there was confusion and civil war in Mecca, with disputes among the sharifian tribes and struggles at Jeddah with Ottoman officials, who, notwithstanding the virtual independence of the sharifs, still dabbled in Hejaz politics. A new element was introduced in Najd (in central Arabia) in the mid-18th century with the rise of the puritan Wahhābīs, who, because the sharifs regarded them as dangerous heretics, for a time were refused permission to make the pilgrimage to Mecca.
Omani expansion
In Oman events took an independent course. The Yaʿrubid dynasty—founded about 1624 when a member of the Yaʿrub tribe was elected imam—expelled the Portuguese from Muscat and set to harrying Portuguese possessions on the Indian coast. Embarking on expansion overseas—to Mombasa in 1698, then to Pemba, Zanzibar, and Kilwa—the Omanis became the supreme power on the coastal regions of the Indian Ocean, and European merchants feared marauding Omani fleets.
The Persians captured Muscat in 1743. The Yaʿrubids dissolved into dynastic dispute, and a leader named Aḥmad ibn Saʿīd set to liberating Oman from the Persians. He became imam in 1749, founding the Āl Bū Saʿīd dynasty. This period in Oman is marked by the crystallization of the political alignment of the tribes of the Banū Ghāfir (Ghāfirī) against those of the Banū Hinā (Hināwī).
During the 18th century the growth of the East India Company and British paramountcy in India began to affect Arabian politics and commerce most directly in the southern coastal region, while the interior was little concerned at first. Coastal Arabia now came fully into the world economy through commerce in coffee, slaves, pearls, and dates and the continuing pilgrimage to Mecca. Oman, Iran, and Sunni Arab tribes struggled to dominate the coasts of the Persian Gulf, while a series of agreements later paved the way for British control in that area.