Final answer:
Edgar Allan Poe left the University of Virginia due to financial issues and stopped speaking to his father because of their strained relationship.
Step-by-step explanation:
Edgar Allan Poe left the University of Virginia and stopped speaking to his father due to a combination of financial issues and differences in personality. Poe's father did not provide enough financial support for him to continue his studies, so Poe was forced to leave the university. Additionally, Poe and his father had a strained relationship, with Poe considering his father to be unnatural and afraid to come near him. This tension between them led to Poe cutting off communication with his father.