Question: When did Britain withdraw from the country where the Pearl Roundabout is located?

full_context: Document 1: Abu Hamza Rabia: According to American intelligence officials, Rabia was al-Qaeda's third in command. Few details have been made available about his background, although CNN reports confirmed his Egyptian origins and indicated that he was in his thirties. He and four other men, two of them also Arabs, were killed in the village of Asoray, near Miranshah, the capital of North Waziristan. His death stirred controversy because it was Pakistani policy that US forces were not allowed in the country.
Document 2: British Empire: In 1951, the Conservative Party returned to power in Britain, under the leadership of Winston Churchill. Churchill and the Conservatives believed that Britain's position as a world power relied on the continued existence of the empire, with the base at the Suez Canal allowing Britain to maintain its pre-eminent position in the Middle East in spite of the loss of India. However, Churchill could not ignore Gamal Abdul Nasser's new revolutionary government of Egypt that had taken power in 1952, and the following year it was agreed that British troops would withdraw from the Suez Canal zone and that Sudan would be granted self-determination by 1955, with independence to follow. Sudan was granted independence on 1 January 1956.
Document 3: British Empire: The Suez Crisis very publicly exposed Britain's limitations to the world and confirmed Britain's decline on the world stage, demonstrating that henceforth it could no longer act without at least the acquiescence, if not the full support, of the United States. The events at Suez wounded British national pride, leading one MP to describe it as "Britain's Waterloo" and another to suggest that the country had become an "American satellite". Margaret Thatcher later described the mindset she believed had befallen the British political establishment as "Suez syndrome", from which Britain did not recover until the successful recapture of the Falkland Islands from Argentina in 1982.
Document 4: British Empire: In July 1956, Nasser unilaterally nationalised the Suez Canal. The response of Anthony Eden, who had succeeded Churchill as Prime Minister, was to collude with France to engineer an Israeli attack on Egypt that would give Britain and France an excuse to intervene militarily and retake the canal. Eden infuriated US President Dwight D. Eisenhower, by his lack of consultation, and Eisenhower refused to back the invasion. Another of Eisenhower's concerns was the possibility of a wider war with the Soviet Union after it threatened to intervene on the Egyptian side. Eisenhower applied financial leverage by threatening to sell US reserves of the British pound and thereby precipitate a collapse of the British currency. Though the invasion force was militarily successful in its objectives, UN intervention and US pressure forced Britain into a humiliating withdrawal of its forces, and Eden resigned.
Document 5: Ayat Al-Qurmezi: Al-Qurmezi became famous in Bahrain and internationally after reading out a poem criticising Bahraini government policies to the Pearl Roundabout gathering of pro-democracy protesters. After the poem was widely circulated via social media she and her family were subjected to harassment and death threats.
Document 6: Abu Nuwas: Some later accounts claim that fear of prison made Abu Nuwas repent his old ways and become deeply religious, while others believe his later, penitent poems were simply written in hopes of winning the caliph's pardon. It was said that al-Ma'mun's secretary Zonbor tricked Abu Nuwas into writing a satire against Ali, the fourth Caliph and son-in-law of the Prophet, while Nuwas was drunk. Zonbor then deliberately read the poem aloud in public, and ensured Nuwas's continuing imprisonment. Depending on which biography is consulted, Abu Nuwas either died in prison or was poisoned by Ismail bin Abu Sehl, or both.
Document 7: 2008 Summer Olympics torch relay: A Macau resident was arrested on April 26 for posting a message on cyberctm.com encouraging people to disrupt the relay. Both orchidbbs.com and cyberctm.com Internet forums were shut down from May 2 to 4. This fueled speculation that the shutdowns were targeting speeches against the relay. The head of the Bureau of Telecommunications Regulation has denied that the shutdowns of the websites were politically motivated. About 2,200 police were deployed on the streets, there were no interruptions.
Document 8: Censorship in Algeria: Recently, President Abdelaziz Bouteflika has ordered several newspapers closures, imprisoned journalists such as Mohammad Benchicou, director of Le Matin and author of a critical biography of Bouteflika, and forced others reporters into exile, mostly in France.
Document 9: British Empire: Though Britain and the empire emerged victorious from the Second World War, the effects of the conflict were profound, both at home and abroad. Much of Europe, a continent that had dominated the world for several centuries, was in ruins, and host to the armies of the United States and the Soviet Union, who now held the balance of global power. Britain was left essentially bankrupt, with insolvency only averted in 1946 after the negotiation of a $US 4.33 billion loan from the United States, the last instalment of which was repaid in 2006. At the same time, anti-colonial movements were on the rise in the colonies of European nations. The situation was complicated further by the increasing Cold War rivalry of the United States and the Soviet Union. In principle, both nations were opposed to European colonialism. In practice, however, American anti-communism prevailed over anti-imperialism, and therefore the United States supported the continued existence of the British Empire to keep Communist expansion in check. The "wind of change" ultimately meant that the British Empire's days were numbered, and on the whole, Britain adopted a policy of peaceful disengagement from its colonies once stable, non-Communist governments were established to assume power. This was in contrast to other European powers such as France and Portugal, which waged costly and ultimately unsuccessful wars to keep their empires intact. Between 1945 and 1965, the number of people under British rule outside the UK itself fell from 700 million to five million, three million of whom were in Hong Kong.
Document 10: Manama incident: The Manama incident on August 26, 2010 involved the arrest in the Seef shopping mall in Manama, Bahrain, of Fakhria al-Singace, the sister of Dr Abdul Jalil Al-Singace, human-rights spokesperson for the Bahrain opposition Haq Movement. According to "The New York Times", three women wearing the niqāb and abaya entered the mall and unfurled a banner reading, "It is forbidden to arbitrarily arrest and detain people". More than a dozen plain-clothes and uniformed police officers surrounded them, and Fakhria al-Singace was handcuffed and arrested after being pinned spread-eagled to a cafe table. She was released the next day.
Document 11: Myanmar: Restrictions on media censorship were significantly eased in August 2012 following demonstrations by hundreds of protesters who wore shirts demanding that the government "Stop Killing the Press." The most significant change has come in the form that media organisations will no longer have to submit their content to a censorship board before publication. However, as explained by one editorial in the exiled press The Irrawaddy, this new "freedom" has caused some Burmese journalists to simply see the new law as an attempt to create an environment of self-censorship as journalists "are required to follow 16 guidelines towards protecting the three national causes — non-disintegration of the Union, non-disintegration of national solidarity, perpetuation of sovereignty — and "journalistic ethics" to ensure their stories are accurate and do not jeopardise national security." In July 2014 five journalists were sentenced to 10 years in jail after publishing a report saying the country was planning to build a new chemical weapons plant. Journalists described the jailings as a blow to the recently-won news media freedoms that had followed five decades of censorship and persecution.
Document 12: British Empire: While the Suez Crisis caused British power in the Middle East to weaken, it did not collapse. Britain again deployed its armed forces to the region, intervening in Oman (1957), Jordan (1958) and Kuwait (1961), though on these occasions with American approval, as the new Prime Minister Harold Macmillan's foreign policy was to remain firmly aligned with the United States. Britain maintained a military presence in the Middle East for another decade. In January 1968, a few weeks after the devaluation of the pound, Prime Minister Harold Wilson and his Defence Secretary Denis Healey announced that British troops would be withdrawn from major military bases East of Suez, which included the ones in the Middle East, and primarily from Malaysia and Singapore. The British withdrew from Aden in 1967, Bahrain in 1971, and Maldives in 1976.
Document 13: British Empire: Though Britain and the empire emerged victorious from the Second World War, the effects of the conflict were profound, both at home and abroad. Much of Europe, a continent that had dominated the world for several centuries, was in ruins, and host to the armies of the United States and the Soviet Union, who now held the balance of global power. Britain was left essentially bankrupt, with insolvency only averted in 1946 after the negotiation of a $US 4.33 billion loan (US$56 billion in 2012) from the United States, the last instalment of which was repaid in 2006. At the same time, anti-colonial movements were on the rise in the colonies of European nations. The situation was complicated further by the increasing Cold War rivalry of the United States and the Soviet Union. In principle, both nations were opposed to European colonialism. In practice, however, American anti-communism prevailed over anti-imperialism, and therefore the United States supported the continued existence of the British Empire to keep Communist expansion in check. The "wind of change" ultimately meant that the British Empire's days were numbered, and on the whole, Britain adopted a policy of peaceful disengagement from its colonies once stable, non-Communist governments were available to transfer power to. This was in contrast to other European powers such as France and Portugal, which waged costly and ultimately unsuccessful wars to keep their empires intact. Between 1945 and 1965, the number of people under British rule outside the UK itself fell from 700 million to five million, three million of whom were in Hong Kong.
Document 14: Hadi al-Mahdi: "The New York Times", which wrote a profile on him one year before he was killed, compared him to Rush Limbaugh in his visibility and impact: "arguably the most breathtaking exercise of free speech in a place where its limits are still being established. It is, by some accounts, one of the most popular programs on the air in Baghdad. It is, without question, immensely entertaining."
Document 15: Overseas military bases of the United Kingdom: The United Kingdom is still considered and remains a global power even into the 21st century; this is evidenced through the nation's 15 overseas military bases, making it second only to the United States in terms of total overseas bases worldwide. Currently, there is also the possibility of an additional two new bases being built in Oman and the United Arab Emirates in the near future. Note that both the United Arab Emirates and Oman were once under British rule, showing the impact of colonialism and the British armed forces military presence across the globe, even into the 21st century.
ground_truth: 1971
sub_queries: Pearl Roundabout >> country Answer: Bahrain
When did Britain withdraw from Bahrain ? Answer: 1971