Don - again, The Beatles were indeed very good at COPYING THE AMERICAN GENRE WE CALL ROCK; and, if you hear or read interviews, you'll find that they suggest so in mentioning those that influenced them. At the same time, of course, other (and, I would say, wiser) English were getting into their own good culture - the folk revivial of the 60s.
Catwpaw - go back to your kitty litter and purge your foul fowl-feathered mouth.