It's all in All About History 125. Xerxes I: God-king of Persia Xerxes (top left) watches over the Battle of Salamis. (Image credit: Public Domain: Wiki/Bavarian State Painting Collections) ...

Xerxes, like other Persian sovereigns, bore the title “King of Kings.” Like many who had come before him, he seems to have shared the compulsion to leave his mark on the world.