Vatican City
The name was first used in the Lateran Treaty, signed on 11 February 1929, which established the modern city-state. The name is taken from Vatican Hill, the geographic location of the state. "Vatican" is derived from the name of an Etruscan settlement, "Vatica" or "Vaticum" meaning garden, located in the general area the Romans called "vaticanus ager", "Vatican territory".
Cardinal Vicar
In 1929, with the establishment of Vatican City, Pope Pius XII removed Vatican City State from the authority of the Cardinal Vicar. Pope John XXIII established that the offices of the vicarate would be located at the Lateran Palace. Pope John Paul II reorganized the vicarate with the Apostolic constitution "Ecclesia in Urbe", to bring the structure of the vicarate more in line with the 1983 Code of Canon Law.