I believe it was a final act of mercy, i could be wrong but.....
A catalog entry of writing under its author's name, most of the time, with the surname placed first.
Love and immortality because Shakespeare is saying that the love he has for his partner will live on within this poem, so she, in turn, will be immortal.
"Visualization<span> or visualisation (see spelling differences) is any technique for creating images, diagrams, or animations to communicate a message." I hope that helps.</span>