Question

What do you thing the speaker means when she say 'the world goes dark'?

Answer 1

that means there is no sign of life everything goes dwarf.

its dark and there is a weird silence in the world and is not the same as before. The world is simply changed into a dwarf place for either speaker or for some character.

hope it helped

Answer 2

According to the poem, the poet wants to convey that the world goes dark for a child when the fuse goes off.

The child has got his own mental implications, and for him the world is dark only when the fuse is off.

While the same sentence can have several other meanings as well, but the closest has been described