I came across this List of countries by population and found it fascinating. I did not realize that the USA is the world’s third most populous nation. Nor did I realize that there is a country with only 50 people in it. And quite a few countries smaller than my hometown of Vinita, Oklahoma.
Indonesia and Brazil come after the USA and are huge. Russia, though, is much less than half the size of the United States. Many of the European powers are quite small. Check out the list. Do you see any other interesting information?