Today's world trend and this historical period are completely different. Due to Arthur's interference, monarchies still exist in strong countries like Germany, Russia, and the Austro-Hungarian Empire.
Although there are representatives of republics such as France and the United States, both of these countries are weakening.
Compared to France and the United States, those evidently more promising are the United Kingdom and Australasia, both being genuine monarchies.
Besides France and the United States, it seems that there are hardly any republics that can compete on the world stage, with even fewer being considered strong nations.
Monarchies are different, leaving aside the two powers of Britain and Australasia for the moment; well-known established monarchies in Europe include the Netherlands, Belgium, Denmark, Sweden, Spain, and so on.
Oh, right. Italy, which has been out of the limelight, currently has a kingdom and is also a bona fide monarchical country.