What is the smallest country?

Vatican City (Stato della Città del Vaticano) covers just 0.44 square kilometers (110 acres) — about one-eighth the size of Central Park. It has a population of approximately 800 citizens, making it the smallest sovereign state in the world by both area and population. Established in 1929 by the Lateran Treaty, it serves as the spiritual and administrative headquarters of the Roman Catholic Church and the residence of the Pope. Despite its size, it issues its own passports, stamps, license plates, and has its own postal system. It also operates Vatican Radio and has one of the world's most visited museums, attracting roughly 7 million visitors per year.