Name The Year: Actor Natalie Wood drowns off Santa Catalina, Calif., at 43.?

Questions

what year was the nba formed?

in what year was the louisiana purchase?

at the battle of antietam, who commanded the xii corps for the union side?

what was the name of the comic book character who couldn't talk, but replied to all by making sounds?

kinsey millhone is a recurring character in this author's series of novels.?