The bubonic plaque changed the social structure of Europe by this:
Before, the nobles and aristocrats were the 'body' that ran almost everything political. However, after the bubonic plague, this was shifted towards the common people. So the common people basically got more rights.
hope this helps :D
Augustus took Julius Caesars place
Japan, its in Asia, not Oceania
Fur elise, piano sonata number 8 and 14 (Beethoven)