Fear at first than a shift because the boy died and it shifts to sorrow and honer. When it says in the last paragraph stuff about the mast and helm, its them splitting apart forever:(
The Great Wall of China is an example of a wall used to protect a place.
The Berlin Wall is an example of a wall to keep two places separate, east and west Germany.
Which poem? are you in the plato program??
I believe the answer is A) what angers the speaker in this poem is the prospect of being chained and fenced.