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".
Catholic Church
The Italian unification of the 1860s incorporated the Papal States, including Rome itself from 1870, into the Kingdom of Italy, thus ending the papacy's millennial temporal power. In response, Pope Pius IX excommunicated King Victor Emmanuel II, refused payment for the land, and rejected the Italian Law of Guarantees, which granted him special privileges. To avoid placing himself in visible subjection to the Italian authorities remained a "prisoner in the Vatican". This stand-off, which was spoken of as the "Roman Question", was resolved by the 1929 Lateran Treaties, whereby the Holy See acknowledged Italian sovereignty over the former Papal States in return for payment and Italy's recognition of papal sovereignty over Vatican City as a new sovereign and independent state.