April 2012). "A Bleeding Heart History of Libertarianism". Cato Unbound. Cato Institute. Retrieved 20 September 2020. an American bleeding-heart libertarian school originating in Arizona. However, it did accept some aspects of social liberalism such as some degree of welfare provision by the state, but on a greatly reduced scale. Hayek and Friedman used the term classical liberalism to refer to their ideas, but others use the term to refer to all liberalism before the 20th century, not to designate any particular set of political views and therefore see all modern developments as being by definition not classical. In the late 19th century, classical liberalism developed into neo-classical liberalism which argued for government to be as small as possible to allow the exercise of individual freedom. In its most extreme form, neo-classical liberalism advocated social Darwinism. Right-libertarianism has been influenced by these schools of liberalism. It has been commonly referred to as a continuation or radicalization of classical liberalism and referred to as neo-classical liberalism. Neolibertarianism The concept of neolibertarianism gained a small following in the mid-2000s among right-leaning commentators who distinguished themselves from neoconservatives by their support for individual liberties and from libertarians by their support for foreign interventionism. Paleolibertarianism Paleolibertarianism was developed by American libertarian theorists Murray Rothbard and Lew Rockwell. Combining conservative cultural values and social philosophy with a libertarian opposition to government intervention, it overlaps with paleoconservatism.. In the United States, paleolibertarianism is a controversial current due its connections to the alt-right and the Tea Party movement. Besides their anti-gun control stance in regard to gun laws and politics in support of the right to keep and bear arms, these movements, especially the Old Right and paleoconservatism, are united by an anti-leftist stance. In the essay "Right-Wing Populism: A Strategy for the Paleo Movement", Rothbard reflected on the ability of paleolibertarians to engage in an "outreach to rednecks" founded on libertarianism and social conservatism. He cited former Louisiana State Representative David Duke and former United States Senator Joseph McCarthy as models for the new movement. In Europe, paleolibertarianism has some significant overlap with right-wing populism. Former European Union-parliamentarian Janusz Korwin-Mikke from KORWiN supports both laissez-faire economics and anti-immigration and anti-feminist positions. Propertarianism Propertarianism advocates the replacement of states with contractual relationships. Propertarian ideals are most commonly cited to advocate for a state or other governance body whose main or only job is to enforce contracts and private