What book is that?
I just bought a new atlas. I'm looking this map of the world. Look at Russia! That's a vast country.
Canada, China, and the USA are huge too.
There are several tiny countries in the world too. Countries like Monaco are smaller than many cities.
Those small countries are microscopic compared to Russia. European countries are relatively small. France looks quite big in Europe, but compared to many countries in other continents, it's not very large at all.
Britain is half the size of france, but great Britain is still one of the largest islands in the world.