Possibly because he had agreed to Englishify Scotland in order to assimilate it to England. Maybe that is why Malcolm decides that all the Thanes should have the English title of Earl.
At the end of Macbeth, the nation that assists Malcolm and the Thanes in invading Scotland is England. King Edward lends military support to Malcolm in his quest to overthrow Macbeth and reclaim the Scottish throne.
The King of England, who at that time was Edward the Confessor.
The English king, Edward the Confessor, has offered to provide troops and support to help defeat Macbeth and restore Malcolm to the throne of Scotland. This assistance comes after Malcolm sought refuge in England following the murder of his father, King Duncan, by Macbeth.
In Macbeth? King Duncan names his son Malcolm The Prince of Cumberland who is the heir apparent. After his murder, Malcolm flees so Macbeth is named to be King but later on in the play Malcolm, Duncan's son, becomes king.
In Shakespeare's "Macbeth," Malcolm's refuge is England, where he seeks safety after fleeing Scotland following his father's murder. He finds support and protection from King Edward the Confessor, who provides him with resources and an army to reclaim his throne. This sanctuary allows Malcolm to strategize and gather allies to confront Macbeth and ultimately restore order to Scotland.
At the end of Shakespeare's play Macbeth; Malcolm, son of Duncan is proclaimed to be King of Scots. (In actual history, Macbeth was succeeded by his son Lulach; who was then was assassinated and deposed by Malcolm)
Duncan's older son Malcolm. He is named Prince of Cumberland in Act I, Scene 5, Lines 44-45.
No, Macduff was not the king of Scotland. The title of king of Scotland was held by Duncan at the beginning of Shakespeare's play "Macbeth," and later by Malcolm after overthrowing Macbeth. Macduff plays a key role in helping Malcolm reclaim the throne but he himself does not become the king.
The son of a king who fled to Ireland in the play Macbeth is Malcolm, the son of King Duncan. Malcolm escapes to Ireland to gather support and allies to overthrow Macbeth and regain the throne of Scotland.
I'm guessing that you are asking two questions: "How does Malcolm feel about Macbeth?" and "What has Macbeth done to become the king?" The answer to the second question is simple: Macbeth killed King Duncan in order to become king. The answer to the first question is almost as simple: Malcolm hates and fears Macbeth. I hope your command of English is sufficient to understand this answer.
Malcolm fled to England after his father, King Duncan, was murdered. He went to seek help and support from King Edward to overthrow Macbeth and restore order in Scotland.
Malcolm, son of King Duncan, was crowned King of Scotland after Macbeth's death. He was able to reclaim the throne with the help of his ally, Macduff.