It ranges from finding deeper meaning to the characters and plot to understanding the themes.
Snake
Faster than light
Colors of green
Striking those who dare get to close
Slithering towards their next meal
Executing with its deadly toxins
Sneaking between rocks
Carrying its prey in their deadly hold
Swerving away from any danger
Making it home with a jaw full of rodent
Being greeted by their family
(I don't know if this is what your asking for but I saw snake poem so I went for it.)
It represents a agreement as a better deal. Bargain is often used to describe something that was bought for less.
<span>By raising the level of tension between characters</span>
Answer: "The (1846) crack" is what both sentences have in common, therefore we can combine them like this:
Since it could not be fixed, the Liberty Bell has had that crack in it ever since.