It's quite simple, So what it is asking is sort of the over exaggeration about how a person is supposed to act and it is generally bad.
The central idea of the poem is how her mother died and took her courage with her, something her child does not have. The child states how since she is dead she took it with her to her grave which is why they said she does not need it anymore. The mother left behind a golden brooch that she wore since it would remind her child of her even when she is gone. But the child wants her courage, not her brooch.
The singers PLEDGED there lives “mutually pledge to each other our Lives, our Fortunes, and our Sacred Honor,”
"Nixon hoped his Vietnamization policy would end US involvement in the Vietnam War"
Or "Vietnamization was the withdrawal of American troops"
