Rather than answer this directly, Italy was not a single nation until about 1861. Significant portions of Italy were added in stages (3 wars of independence) until 1870. The Italian leader Garibaldi helped gain independence for parts of Italy that had been controlled on-and-off by foreign powers and was able to unite the various states and principalities that make up modern-day Italy. You might look up Italy on Wikipedia for more detailed information.
The question as written is unanswerable; If it's an independent republic, then it is not part of Italy. If the question intends to ask: What country entirely bordered by Italy is an independent republic? then the answer is San Marino. Vatican City and Seborga are both quasi-independent countries bordered entirely by Italy, but neither is a republic.
The Vatican City is the country within Italy. This is where the Pope resides. Actually, there are two independent countries within Italy - the Vatican and San Marino.
No, Sardinia is not independent. It is an autonomous region of Italy with its own unique culture and language, but remains politically and administratively part of Italy.
Yes.
All of the countries that neighbor Italy are independent. These countries are France, Austria, Slovenia, and Switzerland. All of Europe are independent.
Greece
The pope does not live in Italy but in Vatican City, an independent country completely surrounded by Rome, Italy.
Actually, Rome is not an independent state. It is the capital city of present day Italy. Within the city of Rome lies the Vatican City which is an independent state. It has all the rights of a free nation and is headed by the Supreme Pontiff or Pope.
The Vatican City.
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The Vatican.
The Vatican is located in Vatican City. Vatican City is a sovereign city state located internally within the city of Rome, Italy.in Central Italy