Right-libertarianism holds that unappropriated natural resources may be appropriated by individuals, but Left-libertarianism goes further and holds that unappropriated natural resources belong to everyone and must be distributed in some egalitarian manner. Right-libertarianism is also referred to as right-wing libertarianism. Right-libertarianism includes anarcho-capitalism and laissez-faire, minarchist liberalism. Right-libertarians maintain that unowned natural resources may be appropriated by the first person who discovers them, or merely claims them without the consent of others. Right-libertarians believe that natural resources are unowned and therefore private parties may appropriate them at will without the consent of others.
Libertarianism is a term used by political philosophies which seek to promote individual liberty and seek to minimize or abolish the state.
Left-libertarianism endorses full self-ownership, but differs on unappropriated natural resources.
Leonard Read rejected the concepts of Left-libertarianism and "Right-libertarianism, calling them authoritarianism.
Libertarianism is also synonymous with classical liberalism.
The word libertarian is an antonym of authoritarian. Till recently the term libertarianism was often used as a synonym for anarchism.