Answer:
Zachariah led a mutiny against captain Jaggery because he thought that the captain was a gentleman and trustworthy but he did not turn out to be trustworthy and cheated.
Step-by-step explanation:
According to Zachariah and Charlotte, captain Jaggery was a trust worthy man. Both of them thought that he was a gentleman and could be trusted very easily. But to their surprise, captain Jaggery turned out to be completely opposite of both of them thought the captain to be.
Captain Jaggery was not a gentleman at all and not at all trust worthy. He had deceived every one and that was the reason why Zachariah had led a mutiny against him and he said that the rebellion was totally justified which was against the captain.