The same thing that happened in the 19th century, "The Great Stink". The name is real and it describes an event from the past which would repeat if they started throwing waste again. The river would become so polluted that disease and contagion would begin to spread. In the 19th century, it was cholera. Now, nobody knows.
I think it was Antinous.
He was the most arrogant of Penelope’s suitors. He lead the campaign to have Telemachus killed. He is never showed sympathy, and he is the first to die when Odysseus returns.
The rime of the ancient Mariner is a ballad stanza and the rest are blank verse
If you want an explanation:
A blank verse doesn’t rhyme and a ballad does
We need more info where is the story?
