Whose flag is this?

France since 1794, during the French Revolution (1789-1799). It has changed a little since back then. It’s commonly referred to as “the three-colour flag” (le drapeau tricolore) or “the blue-white-red flag” (le drapeau bleu-blanc-rouge). White is the color of the king and red is for blood.

The European Union, aka E.U. or Europe. There are twelve golden stars circling on a blue background. You’ll see it on public buildings, including, but not limited to, schools and town halls. There used to be a star for each country in the E.U., but not anymore. Today there are 27 countries in the E.U. (28 before the Brexit).