What great deed did King Arthur achieve as he lived his life? What was his greatest legacy?

Sagot :

         King Arthur is a legendary British leader who defended the Saxon invaders in the 6th century. He is called  "the once and the future king", who is also born in deceit and rivalry.
         He is considered as a great warrior defending Britain from human and supernatural enemies. He is known for his Knights of the Round Table and for uniting the peoples of his land. Even though his end was tragic, he is still known and celebrated all over the world today. His story is painted on the halls of the British Parliament.