in the book the king must die why is the bull dance a religious and signifacant to the cretens?

Answer 1

It's due to the story of the Minotaur. Most make him a human with a bull's head; some say he was a bull with a human head.

The Minotaur lived on the island of Crete, and every year the Athenians had to send seven youths and seven maidens to be sacrificed to it. The Minotaur lived in a maze. Theseus was the one who used a ball of string to find his way back out of the maze.

The ship sending the food-people for the Minotaur had a black sail. Theseus agreed to change the sail to white if he managed to escape and return home. But he forgot, and his father saw the black sails approaching as his ship returned home, and threw himself into the sea in a paroxysm of grief. So Theseus was crowned king when he landed.