Libertarianism is a term used by a spectrum of political philosophies which seek to promote individual liberty and seek to minimize or even abolish the state. There is no single theory that can be reliably identified as the libertarian theory, and no single principle or set of principles on which all libertarians would agree."
Since the late 19th century the term often has been used as a synonym for anarchism. Some versions of libertarianism are synonymous with classical liberalism.
The word libertarian is an antonym of authoritarian.
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