When you infer you are making an educated guess about something or a topic your reading. When it comes to reading you want to make a logical guess about what you think the story is about
Bradford believed God punished a sailor who mistreated the Puritans.
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.