what was the reason behind the imprisonment of the main character?did he redeem his honor? why and how?

Though Dantès does not physically die in prison, he does lose nearly all of his previous character traits. He enters prison innocent, honest, kind, and loving, but leaves it bitter, vengeful, and full of hate. His basic need to die within Dantès is his basic humanity. He is left without compassion and without the ability to show or have normal human emotions, such as sadness, joy, and remorse. It is not Dantès’s time in prison but rather his knowledge that he is suffering this miserable fate because of evil done to him by other human beings. Dantès’s desire for vengeance acts as a poison, eliminating the side of him that would be considered kind.