Investiture, from the Latin (preposition in and verb vestire, 'dress' from vestis 'robe') is a rather general term for the formal installation of an incumbent as the insignia can include the formal dress and adornment (robes of state, headdress etc.) the etymology refers to, but also other regalia in the widest sense, such as a throne or other seat of office, the word is a convenient generic term, also for such more specific cases as coronation (see that article and regalia for more on such ceremonies) and enthronement, though these are also used (rather imprecisely, by analogy) in such extended sense.

The term is used to describe the installation of individuals in institutions that usually have been extant from feudal times. For example, the installation of heads of state and various other state functions with ceremonial roles are invested with office. Usually the investiture involves ceremonial transfer of the symbols of the particular office

Judges in many countries, including justices of the Supreme Court of the United States, are invested with their office. American justices typically take two oaths: one to uphold the Constitution of the United States, and the other to apply justice equally. Likewise, university presidents, rectors and chancellors are invested with office.

Elizabeth II (Elizabeth Alexandra Mary; born 21 April 1926) is the constitutional monarch of 16 sovereign states known as the Commonwealth realms, and head of the 54-member Commonwealth of Nations. She is also head of state of the Crown Dependencies.

Elizabeth was born in London, and educated privately at home. Her father acceded to the throne as George VI in 1936 on the abdication of his brother Edward VIII. She began to undertake public duties during the Second World War, in which she served in the Auxiliary Territorial Service. On the death of her father in 1952, she became Head of the Commonwealth and queen regnant of seven independent Commonwealth countries: the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan, and Ceylon. Her coronation service in 1953 was the first to be televised. Between 1956 and 1992, the number of her realms varied as territories gained independence and some realms became republics. Today, in addition to the first four aforementioned countries, Elizabeth is Queen of Jamaica, Barbados, the Bahamas, Grenada, Papua New Guinea, the Solomon Islands, Tuvalu, Saint Lucia, Saint Vincent and the Grenadines, Belize, Antigua and Barbuda, and Saint Kitts and Nevis.

Sir Edward Richard George "Ted" Heath, KG, MBE, PC (9 July 1916 – 17 July 2005) was a British Conservative politician who served as Prime Minister of the United Kingdom (1970–74) and as Leader of the Conservative Party (1965–75).

Born in Broadstairs, Kent, Heath studied at Oxford and served in the Second World War. He was first elected in the 1950 general election, for Bexley and was government Chief Whip during the 1950s. Entering the Cabinet as Minister of Labour in 1959, he was then Lord Privy Seal responsible for Macmillan's unsuccessful EEC entry negotiations, then President of the Board of Trade. In 1965 Heath won the leadership of the Conservative Party against Reginald Maudling and Enoch Powell. The general election of 1966 saw the Labour government of Harold Wilson achieve a large increase in seats, however Heath remained Conservative leader.

Heath became Prime Minister after winning the 1970 general election. In 1971, Heath oversaw the decimalisation of British coinage and in 1972, he implemented major reform to the UK's system of local government. In foreign policy, Heath took the UK into the European Economic Community (EEC) in 1973. Heath's premiership oversaw the height of The Troubles in Northern Ireland, with the suspension of the Stormont parliament and the imposition of direct British rule. Unofficial talks with IRA delegates were unsuccessful, as was the Sunningdale Agreement of 1973, which caused Ulster Unionists to withdraw from the Conservative whip.

François Gérard Georges Nicolas Hollande (French pronunciation: [fʁɑ̃swa ɔlɑ̃d]; born 12 August 1954) is the 24th President of the French Republic and ex officio Co-Prince of Andorra. He previously served as the First Secretary of the French Socialist Party from 1997 to 2008 and as a Deputy of the National Assembly of France for Corrèze's 1st Constituency from 1988 to 1993 and then again from 1997 to 2012. He also served as the Mayor of Tulle from 2001 to 2008 and the President of the General Council of Corrèze from 2008 to 2012.

He was elected President of France on 6 May 2012, defeating the incumbent Nicolas Sarkozy, and was inaugurated on 15 May. He is the second Socialist President of the Fifth French Republic, after François Mitterrand who served from 1981 to 1995.

Hollande was born in Rouen, Seine-Maritime, Upper Normandy, to a middle-class family. His mother, Nicole Frédérique Marguerite Tribert (1927–2009), was a social worker, and his father, Georges Gustave Hollande, an ear, nose, and throat doctor who "had once run for the extreme right in local politics." The surname "Hollande" is "believed to come from Calvinist ancestors who escaped Holland (the Netherlands) in the 16th century and took the name of their old country." Hollande was raised Catholic but quietly rebelled against the strict religious brothers chosen by his father to educate him. The family moved to Neuilly, a suburb of Paris, when Hollande was 13.

Alassane Dramane Ouattara (French pronunciation: [alasan wataʁa]; born 1 January 1942) is an Ivorian politician who has been President of Côte d'Ivoire since 2011. An economist by profession, Ouattara worked for the International Monetary Fund (IMF) - where he rose to be deputy head - and the Central Bank of West African States (French: Banque Centrale des États de l'Afrique de l'Ouest, BCEAO), and he was the Prime Minister of Côte d'Ivoire from November 1990 to December 1993, appointed to that post by President Félix Houphouët-Boigny. Ouattara became the President of the Rally of the Republicans (RDR), an Ivorian political party, in 1999.

Ouattara was born on 1 January 1942, in Dimbokro, Côte d'Ivoire, French West Africa. He is a descendant from his father's side of the Muslim rulers of the Kong Empire, also known as the Wattara or Ouattara Empire. He received a bachelor of science degree in 1965 from the Drexel Institute of Technology, which is now called Drexel University, in Philadelphia, Pennsylvania. Ouattara then obtained both his master's degree in economics in 1967 and a PhD in economics in 1972 from the University of Pennsylvania.