Background: Count Dracula is the title character of Bram Stoker's 1897 gothic horror novel Dracula. He is considered to be both the prototypical and the archetypal vampire in subsequent works of fiction. He is also depicted in the novel to be the origin of werewolf legends. Some aspects of the character are believed to have been inspired by the 15th-century Wallachian Prince Vlad the Impaler, who was also known as Dracula.
Context: Count Dracula is depicted as the "King Vampire", and can control other vampires. To punish Mina and the party for their efforts against him, Dracula bites her on at least three occasions. He also forces her to drink his blood; this act curses her with the effects of vampirism and gives him a telepathic link to her thoughts. However, hypnotism was only able to be done before dawn. Van Helsing refers to the act of drinking blood by both the vampire and the victim "the Vampire's Baptism of Blood".  The effects changes Mina' physically and mentally over time. A few moments after Dracula attacks her, Van Helsing takes a wafer of sacramental bread and places it on her forehead to bless her; when the bread touches her skin, it burns her and leaves a scar on her forehead. Her teeth start growing longer but do not grow sharper. She begins to lose her appetite, feeling repulsed by normal food, begins to sleep more and more during the day; cannot wake unless at sunset and stops writing in her diary. When Van Helsing later crumbles the same bread in a circle around her, she is unable to cross or leave the circle, discovering a new form of protection.  Dracula's death can release the curse on any living victim of eventual transformation into vampire. However, Van Helsing reveals that were he to successfully escape, his continued existence would ensure that even if he did not victimize Mina further, she would transform into a vampire upon her eventual natural death.
Question: what was draculas greatest accomplishment?. Whats the answer?