Question: Who was the king of Cameroon's main ally in 1306?

full_context: Document 1: Elizabeth II: The engagement was not without controversy: Philip had no financial standing, was foreign-born (though a British subject who had served in the Royal Navy throughout the Second World War), and had sisters who had married German noblemen with Nazi links. Marion Crawford wrote, "Some of the King's advisors did not think him good enough for her. He was a prince without a home or kingdom. Some of the papers played long and loud tunes on the string of Philip's foreign origin." Elizabeth's mother was reported, in later biographies, to have opposed the union initially, even dubbing Philip "The Hun". In later life, however, she told biographer Tim Heald that Philip was "an English gentleman".
Document 2: Nigeria: Nigeria's foreign policy was tested in the 1970s after the country emerged united from its own civil war. It supported movements against white minority governments in the Southern Africa sub-region. Nigeria backed the African National Congress (ANC) by taking a committed tough line with regard to the South African government and their military actions in southern Africa. Nigeria was also a founding member of the Organisation for African Unity (now the African Union), and has tremendous influence in West Africa and Africa on the whole. Nigeria has additionally founded regional cooperative efforts in West Africa, functioning as standard-bearer for the Economic Community of West African States (ECOWAS) and ECOMOG, economic and military organisations, respectively.
Document 3: Imperialism: In World War II, Charles de Gaulle and the Free French used the overseas colonies as bases from which they fought to liberate France. However after 1945 anti-colonial movements began to challenge the Empire. France fought and lost a bitter war in Vietnam in the 1950s. Whereas they won the war in Algeria, the French leader at the time, Charles de Gaulle, decided to grant Algeria independence anyway in 1962. Its settlers and many local supporters relocated to France. Nearly all of France's colonies gained independence by 1960, but France retained great financial and diplomatic influence. It has repeatedly sent troops to assist its former colonies in Africa in suppressing insurrections and coups d’état.
Document 4: Central African Republic: What is today the Central African Republic has been inhabited for millennia; however, the country's current borders were established by France, which ruled the country as a colony starting in the late 19th century. After gaining independence from France in 1960, the Central African Republic was ruled by a series of autocratic leaders; by the 1990s, calls for democracy led to the first multi-party democratic elections in 1993. Ange-Félix Patassé became president, but was later removed by General François Bozizé in the 2003 coup. The Central African Republic Bush War began in 2004 and, despite a peace treaty in 2007 and another in 2011, fighting broke out between various factions in December 2012, leading to ethnic and religious cleansing of the Muslim minority and massive population displacement in 2013 and 2014.
Document 5: Southern Cameroons National Council: The Southern Cameroons National Council (SCNC) is a self - determination organisation seeking the independence of the anglophone Southern Cameroons from the predominantly francophone Republic of Cameroon (La République de Cameroun). It is a non-violent organization with the motto ``The force of argument, not the argument of force. ''Because the SCNC advocates separation from Cameroon, it has been declared an illegal organization by the government of Paul Biya. Security forces regularly interrupt SCNC meetings, arresting members and typically detaining them for several days before release.
Document 6: Ministry of Defence (United Kingdom): The MoD has since been regarded as a leader in elaborating the post-Cold War organising concept of "defence diplomacy". As a result of the Strategic Defence and Security Review 2010, Prime Minister David Cameron signed a 50-year treaty with French President Nicolas Sarkozy that would have the two countries co-operate intensively in military matters. The UK is establishing air and naval bases in the Persian Gulf, located in the UAE and Bahrain. A presence in Oman is also being considered.
Document 7: County of Foix: Henry III of Navarre became King Henry IV of France in 1589. In 1607, he united to the French crown his personal fiefs that were under French sovereignty (i.e. County of Foix, Bigorre, Quatre-Vallées, and Nébouzan, but not Béarn and Lower Navarre, which were sovereign countries outside of the kingdom of France), and so the county of Foix became part of the royal domain.
Document 8: Philip IV in Brown and Silver: The Portrait of Philip IV or Philip IV in Brown and Silver is a portrait of Philip IV of Spain painted by Diego Velázquez. It is sometimes known as "Silver Philip" and is now in the National Gallery in London. It was the main portrait of Philip painted by Velázquez in the 1630s, used as the model for many workshop versions.
Document 9: John, King of England: The rebel barons responded by inviting the French prince Louis to lead them: Louis had a claim to the English throne by virtue of his marriage to Blanche of Castile, a granddaughter of Henry II. Philip may have provided him with private support but refused to openly support Louis, who was excommunicated by Innocent for taking part in the war against John. Louis' planned arrival in England presented a significant problem for John, as the prince would bring with him naval vessels and siege engines essential to the rebel cause. Once John contained Alexander in Scotland, he marched south to deal with the challenge of the coming invasion.
Document 10: Louis V of France: Louis V (c. 966 – 21 May 987), also known as Louis the Do-Nothing (French: Louis le Fainéant), was the King of West Francia from 986 until his premature death a year later. During his reign, the nobility essentially ruled the country. Dying childless, he was the last monarch in the Carolingian line in West Francia.
Document 11: Cameroon: 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.
Document 12: John, King of England: After his coronation, John moved south into France with military forces and adopted a defensive posture along the eastern and southern Normandy borders. Both sides paused for desultory negotiations before the war recommenced; John's position was now stronger, thanks to confirmation that the counts Baldwin IX of Flanders and Renaud of Boulogne had renewed the anti-French alliances they had previously agreed to with Richard. The powerful Anjou nobleman William des Roches was persuaded to switch sides from Arthur to John; suddenly the balance seemed to be tipping away from Philip and Arthur in favour of John. Neither side was keen to continue the conflict, and following a papal truce the two leaders met in January 1200 to negotiate possible terms for peace. From John's perspective, what then followed represented an opportunity to stabilise control over his continental possessions and produce a lasting peace with Philip in Paris. John and Philip negotiated the May 1200 Treaty of Le Goulet; by this treaty, Philip recognised John as the rightful heir to Richard in respect to his French possessions, temporarily abandoning the wider claims of his client, Arthur.[nb 4] John, in turn, abandoned Richard's former policy of containing Philip through alliances with Flanders and Boulogne, and accepted Philip's right as the legitimate feudal overlord of John's lands in France. John's policy earned him the disrespectful title of "John Softsword" from some English chroniclers, who contrasted his behaviour with his more aggressive brother, Richard.
Document 13: Namibia: Namibia follows a largely independent foreign policy, with persisting affiliations with states that aided the independence struggle, including Cuba. With a small army and a fragile economy, the Namibian Government's principal foreign policy concern is developing strengthened ties within the Southern African region. A dynamic member of the Southern African Development Community, Namibia is a vocal advocate for greater regional integration. Namibia became the 160th member of the UN on 23 April 1990. On its independence it became the fiftieth member of the Commonwealth of Nations.
Document 14: Philip IV of France: Philip IV (April -- June 1268 -- 29 November 1314), called the Fair (French: Philippe le Bel) or the Iron King (French: le Roi de fer), was King of France from 1285 until his death. By virtue of his marriage with Joan I of Navarre, he was also Philip I, King of Navarre from 1284 to 1305. He also briefly ruled the County of Champagne in right of his wife, although after his accession as king in 1285 the county remained under the sole governance of his wife until her death in 1305, and then fell to their son Louis until Philip's own death in 1314, after which his son acceded to the French throne and the county was finally united to the crown lands of France. Although Philip was known as handsome, his inflexible personality gained him other epithets, from friend and foe alike. His fierce opponent Bernard Saisset, bishop of Pamiers, said of him, ``He is neither man nor beast. He is a statue. ''
Document 15: Isabella of France, Queen of Navarre: Isabella of France (2 March 1241 – 17 April 1271) was a daughter of Louis IX of France and Margaret of Provence. She was married to Theobald II of Navarre, eldest son of Theobald I of Navarre and Margaret of Navarre on 6 April 1255. Isabelle became Queen consort of Navarre.
ground_truth: Philip IV
sub_queries: Who is Cameroon's main ally? Answer: France
who was the king of France in 1306 Answer: Philip IV