Contact with Europe dates from 1508, when the Portuguese conquered parts of Oman's coastal region. Portugal's influence predominated for more than a century, with only a short interruption by the Turks. Fortifications built during the Portuguese occupation can still be seen at Muscat.
Except for a period when Iran conquered Oman, Oman has basically been an independent nation. After the Portuguese were expelled in 1650 and while resisting Persian attempts to establish hegemony, the Sultan of Oman extended his conquests to Zanzibar, other parts of the eastern coast of Africa, and portions of the southern Arabian Peninsula. During this period, political leadership shifted from the Ibadhi imams (elected religious leaders) to hereditary sultans who established their capital in Muscat - whence the alternative names formerly used for the state: "Muscat" and "Muscat and Oman". The Muscat rulers established trading posts on the Persian coast and also exercised a measure of control over the Makran coast (now part of Pakistan). By the early 19th century Oman functioned as the most powerful state in Arabia and on the East African coast.
Most of these overseas possessions were seized by the United Kingdom and by 1850 Oman was an isolated a poor area of the world.
Oman was the object of Franco-British rivalry throughout the 18th century. During the 19th century, Oman and the United Kingdom concluded several treaties of friendship and commerce. In 1908 the British entered into an agreement of friendship. Their traditional association was confirmed in 1951 through a new treaty of friendship, commerce, and navigation by which the United Kingdom recognized the Sultanate of Oman as a fully independent state.
When Sultan Sa'id bin Sultan Al-Busaid died in 1856, his sons quarreled over the succession. As a result of this struggle, the empire - through the mediation of the British Government under the "Canning Award" - was divided in 1861 into two separate principalities: Zanzibar (with its East African dependencies), and Muscat and Oman. Zanzibar paid an annual subsidy to Muscat and Oman until its independence in early 1964.
During the late 19th and early 20th centuries, the sultan in Muscat faced rebellion by members of the Ibadhi sect residing in the interior of Oman, centered around the town of Nizwa, who wanted to be ruled exclusively by their religious leader, the Imam of Oman. This conflict was resolved temporarily by the Treaty of Seeb, which granted the imam autonomous rule in the interior, while recognising the nominal sovereignty of the sultan elsewhere.
The conflict flared up again in 1954, when the new imam led a sporadic 5-year rebellion against the sultan's efforts to extend government control into the interior. The insurgents were defeated in 1959 with British help. The sultan then terminated the Treaty of Seeb and eliminated the office of the imam. In the early 1960s, the imam, exiled to Saudi Arabia, obtained support from his hosts and other Arab governments, but this support ended in the 1980s.
In 1964, a separatist revolt began in Dhofar Province. Aided by Communist and leftist governments such as the former South Yemen (People's Democratic Republic of Yemen), the rebels formed the Dhofar Liberation Front, which later merged with the Marxist-dominated Popular Front for the Liberation of Oman and the Arab Gulf (PFLOAG). The PFLOAG's declared intention was to overthrow all traditional Persian Gulf régimes. In mid-1974, PFLOAG shortened its name to the Popular Front for the Liberation of Oman (PFLO) and embarked on a political rather than a military approach to gain power in the other Persian Gulf states, while continuing the guerrilla war in Dhofar.
In 1970, Qaboos bin Said Al Said ousted his father, Sa'id bin Taymur, who later died in exile in London. Al Said has ruled as sultan ever since. The new sultan confronted insurgency in a country plagued by endemic disease, illiteracy, and poverty. One of the new sultan's first measures was to abolish many of his father's harsh restrictions, which had caused thousands of Omanis to leave the country, and to offer amnesty to opponents of the previous régime, many of whom returned to Oman. He also established a modern government structure and launched a major development programme to upgrade educational and health facilities, build a modern infrastructure, and develop the country's natural resources.
In an effort to curb the Dhofar insurgency, Sultan Qaboos expanded and re-equipped the armed forces and granted amnesty to all surrendering rebels while vigorously prosecuting the war in Dhofar. He obtained direct military support from the U.K., Iran, and Jordan. By early 1975, the guerrillas were confined to a 50-square-kilometer (20-square-mile) area near the Yemeni border and shortly thereafter were defeated. As the war drew to a close, civil action programs were given priority throughout Dhofar and helped win the allegiance of the people. The PFLO threat diminished further with the establishment of diplomatic relations in October 1983 between South Yemen and Oman, and South Yemen subsequently lessened propaganda and subversive activities against Oman. In late 1987 Oman opened an embassy in Aden, South Yemen, and appointed its first resident ambassador to the country.
Since his accession in 1970, Sultan Qaboos has balanced tribal, regional, and ethnic interests in composing the national administration. The Council of Ministers, which functions as a cabinet, consists of 26 ministers, all directly appointed by Qaboos. The Majlis Al-Shura (Consultative Council) has the mandate of reviewing legislation pertaining to economic development and social services prior to its becoming law. The Majlis Al-Shura may request ministers to appear before it. In September 2000, about 100,000 Omani men and women elected 83 candidates, including two women, to seats in the Majlis Al-Shura.
Further, in December 2000, Sultan Qaboos appointed the 48-member Majlis Al Dowla, or State Council, including five women, which acts as the upper chamber in Oman's bicameral representative body.
In November 1996, Sultan Qaboos presented his people with the "Basic Statutes of the State," Oman's first written "constitution". It guarantees various rights within the framework of Koranic and customary law. It partially resucitated long dormant conflict-of-interest measures by banning cabinet ministers from being officers of public shareholding firms. Perhaps most importantly, the Basic Statutes provide rules for setting Sultan Qaboos' succession.
Oman occupies a strategic location on the Strait of Hormuz at the entrance to the Persian Gulf, 35 miles directly opposite Iran. Oman has concerns with regional stability and security, given tensions in the region, the proximity of Iran and Iraq, and the potential threat of political Islam. Oman maintained its diplomatic relations with Iraq throughout the Gulf War while supporting the United Nations allies by sending a contingent of troops to join coalition forces and by opening up to pre-positioning of weapons and supplies. In addition, since 1980 Oman and the United States have been parties to a military co-operation agreement, which they revised and renewed in 2000. Oman also has long been an active participant in efforts to achieve Middle East peace.
Following the September 11, 2001 terrorist attacks on the United States, the Omani Government at all levels pledged and provided impressive support to the U.S.-led coalition against terrorism. Oman has signed most United Nations-sponsored anti-terrorism treaties.
Al Said's extensive modernization program has opened the country to the outside world and has preserved a long-standing political and military relationship with Britain. Oman's moderate, independent foreign policy has sought to maintain good relations with all Middle Eastern countries.