List of presidents of the United States by age
The median age upon accession to the presidency is 55 years and 3 months. This is how old Lyndon B. Johnson was at the time of his inauguration. The youngest person to assume the office was Theodore Roosevelt, who became president at the age of , following William McKinley's assassination; the oldest was Donald Trump, who was old at his inauguration. The youngest person to be elected president was John F. Kennedy, at of age on election day; the oldest was Ronald Reagan, who was old at the time of his election to a second term.
Valéry Giscard d'Estaing
Giscard was finally elected President of France, defeating Socialist candidate François Mitterrand by 425,000 votes—still the closest election in French history. At 48, he was the fourth youngest president in French history at the time, after Louis-Napoléon Bonaparte and Jean Casimir-Perier. In 2017, Emmanuel Macron, at the age of 39, became the youngest President in the history of France. He promised "change in continuity". He made clear his desire to introduce various reforms and modernise French society, which was an important part of his presidency. He for instance reduced from 21 to 18 the age of majority and pushed for the development of the TGV high speed train network and the Minitel, a precursor of the Internet. He promoted nuclear power, as a way to assert French independence. In 1975 he invited the heads of government from West Germany, Italy, Japan, the United Kingdom and the United States to a summit in Rambouillet, to form the Group of Six major economic powers (now the G7, including Canada). Economically, Giscard's presidency saw a steady rise in personal incomes, with the buying power of workers going up by 29% and old age pensioners by 65%.