Vatican City

The Vatican City is a European Microstate located on the Italian Peninsula. Along with San Marino and Lesotho, its the only enclaved country in the world. Vatican City is controlled by the Holy See, also known as Santa Sedes in Latin. The Pope, also the King controls the Holy See. Vatican City maintains good relations with most Christian Countries.

Geography
Vatican City is located in the Italian Peninsula, enclaved by Italy. It's a pretty flat country inside Rome.

Name
In the fourteenth century, when the papacy was returned to Rome from Avignon (France), the present-day Vatican became the residence of the popes, and the word came to refer to the enclave in the middle of Rome that had become the seat of the Roman Catholic Church. So Vatican could mean that it refers the city is in the middle of Rome.

Pezminer12 (MappingPez)
If Vatican City wasn't all Catholic and important in the world, it would be annexed by Italy. But I think they would keep this country alive because of the Pope, and the Holy See. The world sees the Vatican as an important figure, so Italy would keep this enclave safe,

Mexicoball
It dies because Mexico conquers it.

Or it stays the same and Italy protects it, then Italy collapses, the Pope is 'scared' of this, and then a Fascist State ni Italy takes over it and makes it a vassal.

Ceplio
It buys all of Rome.

Razvy
During the WW3, Vatican takes some Italian lands, becoming a bigger state, renaming to Vaticania.