Having your country’s flag on your property
Oh wild guess… USA?
Denmark too. You’re not a success in Denmark until you have a flagpole, two kids (no more, no less), an electric car, a robot mower, a robot hoover and a sunken trampoline.
I moved to Denmark recently. The Danish love to fly their flag. Half of the houses have a flagpole. It’s weird for me because no one in Poland does this.
It’s a long story of course, but goes back to a wave of nationalism that arose after the 1864 wars against Prussia. The Danes often said “what is lost externally must be gained internally” and it lead to a break with Pan-Scandinavism so Danes really had nothing but flags and flagpoles left. And boy did they use them.