Did King Arthur become king by the excalibar?
No, he did not become king by Excalibur. In legend, he became king by pulling a sword out of an anvil that no one but the true heir to the throne could pull out.
King Arthur did not become a knight. He was working for a knight and planning to become one, but he became king first. There was a contest once that Merlin held. Uther Pendragon was king but died. They had to decide who would be king of England so they put a magical sword in a stone. Whoever pulled it out was king of England and King Arthur did.
No one is for Sure if he killed him or not But if you Read diffrent books and records he Fatally injuired But king arthur later on killed mordred but is Severely wounded and is taken on a boat to avalon where Supposingly Sir gawain died later it is said that he was burried in avalon and his Wife guenievere was burried beside of him. And others say he is there and waiting to return…