Final answer:
Oedipus accused Creon of manipulating Teiresias to secure the throne due to suspicions of Creon's political ambitions and interpretation of Teiresias' prophecy, which Oedipus perceived as part of a conspiracy against his rule.
Step-by-step explanation:
Oedipus accused Creon of manipulating Teiresias for two main reasons: political ambitions and the nature of Teiresias' prophecy. Oedipus harbored suspicions about Creon's loyalty and intentions, considering Creon's power and position as the brother-in-law to the former king. Furthermore, the confrontation spun out of Oedipus' mistrust of Teiresias, whom he suspected was conspiring with Creon. Teiresias, a revered prophet in Oedipus the King, hints at devastating truths, exacerbating Oedipus' paranoia and leading him to believe that Creon was using the seer to overthrow him.