They have private cars... trains.... and of course transportation for rents.
Vatican City is a country within Rome, the smallest country in the world.
the city of Vatican City is within the city of Rome
Rome was a monarchy in tell they switched to a republic this happened in 510 B.C.
There are no major cities in Rome - Rome is a city, the capital city if Italy. (It you meant to ask - "What are the major cities of the ancient Roman Empire" - then ask this as a separate question).
It is a state within Rome. It is in the center of the city.
A city state within a city is Vatican City which is located withing the city of Rome, Italy. Rome is a landlocked city.
Rome is a city. How can there be a city within a city? There is the Vatican in Rome which is an independent state called Vatican City. But that is only a church, a museum, a big garden and a small number of buildings and only about 1,000 people. That is hardly a city.
Vatican City is a sovereign country within the borders of Italy. It has a population of less than 1000 people and is entirely within the city of Rome.
They were buried outside the city walls. Roman Religion forbade burials within the city walls.
No, it is not. It is within the city of Rome, Italy.
Vatican
Rome totally surrounds the country of Vatican City.