The caged bird singswith a joyous songof the captive life that kept it safe all along.This answer exemplifies the two birds: free and caged. Free in such a way that it is able to sing a song of its choice, and caged, because even if it is in captive it has something to be thankful for, its safety.
Defeat because he didn't want to get the pearl to get killed for having it and it was bad luck.
Narrative point of view or narrative perspective describes the position of the narrator, it works almost like a camera on the narrator's shoulder showing what he/she sees.
Its a dependent clause
and i think you meant "until" im not the grammar police but just sayin