What is the smallest major city in the world?
What is the smallest major city in the world? Vatican City, Vatican The world's smallest fully independent nation state as well as one of the world's least-populated cities, the Vatican City has a population of around 1,000 people.
What if all humans lived in one city?
[General] If the Earth's population lived in one city how would that look? It's a statement fact: if the entire world's population lived in a city with the density of New York it would take up a space roughly as large as the state of Texas.