paragraph_text: A pearl is a hard glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as a conulariid. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite) in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of this, pearl has become a metaphor for something rare, fine, admirable and valuable.

paragraph_text: Before the discovery of oil, the economy of the Qatari region focused on fishing and pearl hunting. A report prepared by local governors of Ottoman Empire in 1892 states that total income from pearl hunting in 1892 is 2,450,000 kran. After the introduction of the Japanese cultured pearl onto the world market in the 1920s and 1930s, Qatar's pearling industry crashed. Oil was discovered in Qatar in 1940, in Dukhan Field. The discovery transformed the state's economy. Now, the country has a high standard of living for its legal citizens. With no income tax, Qatar (along with Bahrain) is one of the countries with the lowest tax rates in the world. The unemployment rate in June 2013 was 0.1%.  Corporate law mandates that Qatari nationals must hold 51% of any venture in the Emirate.As of 2016, Qatar has the fourth highest GDP per capita in the world, according to the International Monetary Fund. It relies heavily on foreign labor to grow its economy, to the extent that migrant workers compose 86% of the population and 94% of the workforce. Qatar has been criticized by the International Trade Union Confederation. The economic growth of Qatar has been almost exclusively based on its petroleum and natural gas industries, which began in 1940. Qatar is the leading exporter of liquefied natural gas. In 2012, it was estimated that Qatar would invest over $120 billion in the energy sector in the next ten years. The country was a member state of Organization of Petroleum Exporting Countries (OPEC), having joined in 1961, and having left in January 2019.

paragraph_text: 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.

paragraph_text: Its foreign policy closely follows that of its main ally, France (one of its former colonial rulers). Cameroon relies heavily on France for its defence, although military spending is high in comparison to other sectors of government.President Biya has engaged in a decades-long clash with the government of Nigeria over possession of the oil-rich Bakassi peninsula. Cameroon and Nigeria share a 1,000-mile (1 600 km) border and have disputed the sovereignty of the Bakassi peninsula. In 1994 Cameroon petitioned the International Court of Justice to resolve the dispute. The two countries attempted to establish a cease-fire in 1996, however, fighting continued for years. In 2002, the ICJ ruled that the Anglo-German Agreement of 1913 gave sovereignty to Cameroon. The ruling called for a withdrawal by both countries and denied the request by Cameroon for compensation due to Nigeria's long-term occupation. By 2004, Nigeria had failed to meet the deadline to handover the peninsula. A UN-mediated summit in June 2006 facilitated an agreement for Nigeria to withdraw from the region and both leaders signed the Greentree Agreement. The withdrawal and handover of control was completed by August 2006.

paragraph_text: 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.

paragraph_text: The EBU announced on 7 November 2017 that forty - two countries would participate in the contest. Russia confirmed their return after withdrawing from the previous edition, while Macedonia's participation was provisionally blocked by the EBU due to unpaid debts by its national broadcaster. However, ten days later, the EBU announced that Macedonia would be allowed to enter the contest, raising the number of participating countries to forty - three, equaling the highest number of participants with the 2008 and 2011 editions.

paragraph_text: Pearl Lake State Park, at the base of Hahn's Peak, is in Routt County, Colorado near the town of Hahn's Peak, Colorado and is north of Steamboat Springs. Pearl Lake is named for M. Pearl Hartt, the wife of pioneer sheep rancher, John Kelly Hartt.

paragraph_text: 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.

paragraph_text: The Makupa Circus is a primary road junction in Mombasa, Kenya. The roundabout is situated in the Makupa area of the island.

paragraph_text: Before the attack on Pearl Harbor, the 800,000-member America First Committee vehemently opposed any American intervention in the European conflict, even as America sold military aid to Britain and the Soviet Union through the Lend-Lease program. Opposition to war in the U.S. vanished after the attack. On 8 December, the United States, the United Kingdom, Canada, and the Netherlands declared war on Japan, followed by China and Australia the next day. Four days after Pearl Harbor, Nazi Germany and Fascist Italy declared war on the United States, drawing the country into a two-theater war. This is widely agreed to be a grand strategic blunder, as it abrogated the benefit Germany gained by Japan's distraction of the U.S. (predicted months before in a memo by Commander Arthur McCollum)[nb 12] and the reduction in aid to Britain, which both Congress and Hitler had managed to avoid during over a year of mutual provocation, which would otherwise have resulted.

paragraph_text: Starting in 1940 (18 months before Pearl Harbor), the nation mobilized, giving high priority to air power. American involvement in World War II in 1940–41 was limited to providing war material and financial support to Britain, the Soviet Union, and the Republic of China. The U.S. entered officially on 8 December 1941 following the Japanese attack on Pearl Harbor, Hawaii. Japanese forces soon seized American, Dutch, and British possessions across the Pacific and Southeast Asia, except for Australia, which became a main American forward base along with Hawaii.

paragraph_text: The possibility of withdrawal depends on the terms of the treaty and its travaux preparatoire. It has, for example, been held that it is not possible to withdraw from the International Covenant on Civil and Political Rights. When North Korea declared its intention to do this the Secretary-General of the United Nations, acting as registrar, said that original signatories of the ICCPR had not overlooked the possibility of explicitly providing for withdrawal, but rather had deliberately intended not to provide for it. Consequently, withdrawal was not possible.

paragraph_text: The "Magic Roundabout" in Hemel Hempstead, Hertfordshire, England, is the familiar name given to the Plough roundabout. The familiar name comes from the children's television programme, and is also used for a similar junction in Swindon and the M40 junction in Denham. The official name relates to a former public house, called "The Plough Inn", which was between the junction of what is now Selden Hill and St Albans Road. It has also been known as the Moor End Roundabout as it is adjacent to the part of Boxmoor nearest the town. Before Hemel Hempstead became a New Town the roads met in a simple junction which was then replaced by a standard roundabout.

paragraph_text: Dolna Banya Municipality is a municipality in Sofia Province, Bulgaria. It is best known for hosting Adolf Hitler on his roundabout tour of his captured dominions in 1942.

paragraph_text: The R730 road is a regional road in County Wexford, Ireland. From its junction with the R702 in Kiltealy it takes a southeasterly route to its junction with the R741 in the centre of Wexford Town, continuing south to Blackhorse to its junction on a roundabout with the N25 Wexford bypass.

paragraph_text: Britain's remaining colonies in Africa, except for self-governing Southern Rhodesia, were all granted independence by 1968. British withdrawal from the southern and eastern parts of Africa was not a peaceful process. Kenyan independence was preceded by the eight-year Mau Mau Uprising. In Rhodesia, the 1965 Unilateral Declaration of Independence by the white minority resulted in a civil war that lasted until the Lancaster House Agreement of 1979, which set the terms for recognised independence in 1980, as the new nation of Zimbabwe.

paragraph_text: In 1956, following the declaration of the Imre Nagy government of withdrawal of Hungary from the Warsaw Pact, Soviet troops entered the country and removed the government. Soviet forces crushed the nationwide revolt, leading to the death of an estimated 2,500 Hungarian citizens.

paragraph_text: The Chinese Garage is a garage and former petrol station situated in Beckenham in the London Borough of Bromley, on a roundabout linking Beckenham, Eden Park and Shortlands. Built in 1928 to a Japanese pagoda style design by Edmund B. Clarke, it was voted the most unusual garage in England in 2001.

paragraph_text: Rondo Zesłańców Syberyjskich w Warszawie is a roundabout in western Warsaw's Ochota district, named after Poles who have been exiled to Siberia.

paragraph_text: "The Dragon Pearl" is the first treaty co-production between Australia and China. A Treaty Co-production is where 2 producers from 2 countries, bound by international law, agree to a cultural, creative and financial association to produce a film together. The final production is regarded simultaneously a full Chinese film as well as a full Australian film.

Question: When did Britain withdraw from the country where the Pearl Roundabout is located?
Answer: 1971