Hamlet anaylsis

I believe that in the first act of Hamlet William Shakespeare put the ghost of the previous king Hamlet to show the dead king's significance to the play. In the start of the play Hamlet, the guards have been seeing the dead king for days and have shown it to Horatio, who is the friend of Hamlet. By seeing the dead king, Horatio thinks of the event as an ill omen for the future. Horatio believes that the dead king's ghost is a warning about future military defeats of the country. He tries to speak to the dead king, but the ghost does not reply, so Horatio thought of telling Hamlet about what has occurred. The young Fortinbras is thought to attack the country to regain the lands that the previous King Hamlet had conquered, so the previous king's actions can help incite a war, which may later on drastically affect the play. Later on, Hamlet discovers that his uncle will marry his mother even though less than two months have passed since the previous king's demise. Through this discovery, Hamlet loses respect for his mother and his uncle, furthermore through the discovery of marriage, Hamlet wishes that he can die and join his father. Through the absence of the previous King Hamlet, Hamlet lacks a father figure and is pessimistic about the world, which can later drastically affect  his actions and how he perceives events in the future.
                 Later on, Hamlet guided by Horatio meets his dead father's ghost and follows it. The dead king reveals to Hamlet that his death was unnatural and that Hamlet should take revenge for him. Through the revelation about the previous king's plea for revenge, the plot of Hamlet's life takes a huge turn. William Shakespeare put the previous king to drastically impact Hamlet. Hamlet feels depressed and saddened that his mother feels no remorse or guilt over getting remarried to the previous king's brother. Moreover, Hamlet decides to follow his dead father's advice and try to take up his plan for revenge, so his father clearly has much impact on Hamlet's life, even affecting his feelings towards their his relatives. Hamlet's father has a strong influence over Hamlet even though he is dead; Shakespeare may have done that to show how people can influence us even after they are gone, which shows how much thought he has put into his play Hamlet.