Answer:
T.J.'s relationships show the difference between true friendship and false friendship.
You didn't provide the unit, however, Romantic poetry often dealt with themes of the beauty of nature, the emotions and the individualism of the speaker. They also showed high subjectivity and mystical spiritual apparitions. In the US, they also incorporated things like death, darkness, and depression, often due to love.
The Persians invaded Greece during the first Persian War under Darius I, because the Athenians had sent aid to help the uprising against Persia.
