Start by naming any country that France borders. Then name any country that borders any of those countries. Then keep going until there are no more countries left to name.
In Norway's flag, I can also see the flags of Monaco and Poland, but not Indonesia, that have a lighter red colour, og Finland, that have lighter blue, and the cross is far too little compared to the white to fit inside.
https://www.pinterest.com/pin/410742428487821189/