Final answer:
In Alexandre Dumas's novel 'The Count of Monte Cristo', it is Eugénie Danglars' father, Danglars, who cancels her engagement to Albert de Morcerf due to scandalous revelations about Albert's father, which are orchestrated by Edmond Dantès, the Count of Monte Cristo.
Step-by-step explanation:
The engagement of Eugénie Danglars and Albert de Morcerf is a plot point from Alexandre Dumas's novel The Count of Monte Cristo. The characters and their engagement are fictional and thus, the engagement's cancellation is also a work of fiction. In the novel, it is Danglars, Eugénie's father, who cancels the engagement due to revelations about Albert de Morcerf's family honor.
These revelations come to light due to the vengeful actions of the novel's protagonist, Edmond Dantès, who operates under the guise of the Count of Monte Cristo. Dantès meticulously exposes the past sins of de Morcerf's father, culminating in the loss of prestige for the family, which leads Danglars to cancel the arranged marriage.
In the novel The Count of Monte Cristo by Alexandre Dumas, Albert de Morcerf realizes that Eugenie Danglars is not the person he truly loves and decides to break off the engagement.
This event takes place in the context of a complex web of relationships and plot twists, where the characters' actions and motives are intertwined.