Easter Eggs are hidden or infered links or messages found in items such as books.
In this case, these are primarily links to real world things.
Eugenides and Alexander The GreatEdit
-Teleus did mention to Eugenides that some may find his ways too merciful, which matches Alexander's wise strategy, and also Teleus says at the very end that Eugenides is an "annux, a king of kings" and "shall rule more than attolia before he is done".
Eeddis and AthensEdit
-Athens depended largely on Trade, and so did Eeddis.