Smritis mean "that which has to be remembered". Unlike the Vedas which are considered of divine origin, the Smritis are of human composition which guide individuals in their daily conduct according to time and place. They list the codes and rules governing the actions of the individual, the community, society, and the nation. They are also called Dharma Sastras or laws of righteous conduct.
Manu is considered a law giver in the Hindu tradition. Manu Smriti is one of the 18 Smritis. It is important to note that laws given by Manu, in Manu Smriti although followed in some form even today, are not considered divine, and may be modified by the society to keep up with the times. Indeed, it has been speculated that in its current form, Manu Smriti represents laws that have been added or modified throughout the history.