Answer:
The line 'So Eden sank to grief' is an allusion, or literary reference, to the Biblical story about The Garden of Eden, a perfect paradise until Eve ate from the Tree of Knowledge. By making this reference, Frost is implying that the idea nothing good can last is an old one; it's part of our human experience.
Answer: Struggle means sacrifice. It means you do everything you can to succeed towards your goal. It means you risk stability, relationships, and finances for your vision. Making this level of commitment is where struggle actually shows up, because it's not easy.
Explanation:
If I can remember it would be B