I believe that its medal. Jake is the subject and showed is the verb the direct object has to be medal.
Solution: '...this bitterness was now mine' indicates that effect of racial prejudice are passed down from generation to generation.
The world around a person born into a disadvantaged family sets a conspiracy against him even before they are born and this is passed on to his children.
I would say that we know that Telemachus is nervous about talking to Nestor because he tells Athena, he follows Athena at a distance, and he repeats Athena's prayer - word for word.