Most Helpful Guy
Officially, Vatican is the smallest country in the world, followed by Monaco and Nauru.
Unofficially, the smallest unrecognised nation in the world is Sealand.
Vatican covers area of 0,44 km2 - 44 ha (110 acres), population is only 821 people.
Sealand covers area of only 0.025 km2 (livable space on the Roughs Tower), whilst population is only 27 people.0