what is natural Law?

Natural law is a theory that suggests there are inherent moral principles that govern human behavior and can be discovered through reason and observation of the natural world. These principles are believed to be universal and unchanging, and are thought to provide a foundation for ethical decision-making and the development of just societies. Proponents of natural law argue that these principles are not created by human beings or governments, but are instead derived from the nature of human beings and the world around them.