The ghost of christmas past showed scrooge his days as a kid. He also showed his wife and how she left, from him being too bitter and money-hungry. This was the first ghost, and it brought him ot tears.
The ghost of christmas present showed scrooge the harshness of his workers. Their houses were wretched. This made scrooge realize that not all people are as fortunate as him.
The ghost of future was the climax of the story. When the ghost brought scrooge here, it show'd him his own gravestone. This made him realize that he need to be better, begging for mercy from the ghost.
