1963

Watercraft capable of independent underwater operation

A submarine is a watercraft capable of independent operation underwater. The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels. Submarines are referred to as boats rather than ships regardless of their size.

Head of the Catholic Church from 1958 to 1963

Pope John XXIII was head of the Catholic Church and sovereign of Vatican City from 28 October 1958 until his death on 3 June 1963.

Country in Eurasia from 1922 to 1991

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR), was a transcontinental country that spanned much of Eurasia from 1922 until its dissolution in 1991. It was the world's third-most populous country, the largest by area, and bordered twelve countries. A diverse multinational state, it was organized as a federal union of national republics, with the largest and most populous being the Russian SFSR.

American minister and civil rights activist (1929–1968)

Martin Luther King Jr. was an American civil rights activist and Baptist minister who was a prominent leader of the civil rights movement from 1955 until his assassination in 1968. He advanced civil rights for people of color in the United States through the use of nonviolent resistance and civil disobedience against Jim Crow laws and other forms of legalized discrimination, which most commonly affected African Americans.

Elected institution governing the worldwide Baháʼí community

The Universal House of Justice is the nine-member supreme ruling body of the Baháʼí Faith. It was envisioned by Baháʼu'lláh, the founder of the Baháʼí Faith, as an institution that could legislate on issues not already addressed in the Baháʼí writings, providing flexibility for the Baháʼí Faith to adapt to changing conditions. It was first elected in 1963, and subsequently every five years, by delegates consisting of the members of Baháʼí National Spiritual Assemblies throughout the world.

British princess

Princess Alexandra, The Honourable Lady Ogilvy, is a member of the British royal family. She is the only daughter of Prince George, Duke of Kent, and Princess Marina of Greece and Denmark, the only living granddaughter of George V, a niece of Edward VIII and George VI, and a first cousin of Elizabeth II. Alexandra's mother was also a first cousin of Prince Philip, Duke of Edinburgh, consort of Elizabeth II, making her both a second cousin and first cousin once removed of Charles III.