He is also known for his involvement in advising the lords of Tahara han in management of the domain's economy, defenses against potential foreign threats, and so forth. Kazan fell victim, however, to a shogunate crackdown on ''Rangaku'' in [[1839]] - a set of incidents known as ''[[Bansha no goku]]'', in which Kazan and a number of other prominent ''Rangaku'' scholars were arrested and imprisoned, perhaps partially under suspicion of sedition or critique against the government. | He is also known for his involvement in advising the lords of Tahara han in management of the domain's economy, defenses against potential foreign threats, and so forth. Kazan fell victim, however, to a shogunate crackdown on ''Rangaku'' in [[1839]] - a set of incidents known as ''[[Bansha no goku]]'', in which Kazan and a number of other prominent ''Rangaku'' scholars were arrested and imprisoned, perhaps partially under suspicion of sedition or critique against the government. |