Based on the clue 'by itself its a geographic line as a suffix it mea...', what is the answer?

What is associated with: by its intended opening day may 14 1787 only the delegations from virginia and pennsylvania ha… Based on the clue 'by its isolated nature your last original thought ...', what is the answer? Based on the clue 'by its name its what your title has to be to have ...', what is the answer? Based on the clue 'by its old definition of an amorous dalliance we n...', what is the answer? Based on the clue 'by james patterson maxine paetro 4th of', what is the answer? What is associated with: by january of 1992 he narrowed the gap but ultimately lost the republican nomination? Based on the clue 'by jove this father of jove has a day a planet n...', what is the answer? Based on the clue 'by jove kids it was around 41 bc when your mother ...', what is the answer?