What country pioneered the tradition of 'Lucia Crown' with candles worn on the head?

Sweden

What bird's call sounds similar to hysterical human laughter? What red-nosed animal guides Santa's sleigh through foggy weather? What game task players to arrange various shaped plastic pieces so they fit onto a timer-controlled board before it pops? From what country does feta cheese originate? What type of grain is traditionally featured in couscous from North Africa?