Final answer:
The Bulgar captain took Cunegonde following an act of betrayal, as suggested by the context of Voltaire's 'Candide' and the themes of manipulation and deceit in the provided quotes.
Step-by-step explanation:
The Bulgar captain took Cunegonde after a betrayal. In Voltaire's "Candide" which the question seems to be referencing, the events unfold in such a way that the captain could take Cunegonde only after a treacherous act was committed. Such a notion of betrayal aligns with the second given quote which discusses the theme of manipulation and deceit for personal gain, suggesting that the actions of a true brigand would involve creating discord to achieve unfettered control over someone's affections or possessions.