What is the smallest country in the world by land area?

Hints

Its entire border is less than 4 kilometres long.
It is closely associated with the Roman Catholic Church.
It is located inside Rome.

Reveal the answer

Answer: Vatican City

Also accepted: Vatican, Vatican City State

Vatican City is the world's smallest independent country by land area, covering only about 0.49 square kilometres (0.19 square miles). It is completely surrounded by Rome, Italy, and serves as the headquarters of the Roman Catholic Church.

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