I believe the conflict that slavery was becoming worse is the answer. When reading, the author wanted you to understand that the US had tried to fix the problem of slavery using the Missouri Compromise. Although, as you can see, it didn’t seem to work XD. All in all, I just think the author was trying to say that the problem of slavery had gotten worse.
They are different because they rarely happen and they are for different reasons .
Example : It's like seeing a rainbow , or finding a dollar on the sidewalk.
I really hope this helps
The answer is simple, really. It's because it represents their marriage. And it was carved into an olive tree, if I'm not mistaken. So if you wanted to move something carved into a tree, you would have to move the tree so... hope this helps in any way shape or form. :)
