How did Claudius die?

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After marrying his niece Agrippina, Claudius adopted her son Lucius Domitius Ahenobarbus (later the emperor Nero) to satisfy Agrippina’s lust for power, much to the disadvantage of his own son Britannicus. Roman tradition is unanimous: Claudius was poisoned by Agrippina on October 13, 54 CE, though the details differ. Nero succeeded him as emperor.