In the US, many laws were immoral and have been changed.
They used to needlessly kill buffalo by the thousands and the bald eagle was nearly made extinct due to sheer ignorance and carelessness. The generation of the 19th century was one of the most environmentally careless and exploitative in history.
Brutal, inhuman slavery was legal as well for most of the 19th century in the US. Yes, that was immoral too. And sadly people used the Bible to justify it.