1.you can tell the difference between unjust law and just law because of moral law and how people get treated. A just law is something that should be uplifting people and keeping peace.Moral laws are something that shows off people personalities.

The difference between unjust law and just law effects how somone lives there life because their morals show and the life they choose to live shows that too.for example a person in jail in in a very different position then someone that is a law obeying citizen . Having the distinction is what makes a person a hood person in society

common law marriage laws are unjust because many people have chosen not to get married because of the responsibility yet they still have to obey the split process of common law a just law is rental land lord laws which makes sure everyone lives in a safe space