Question: Anarchy is the condition of a society, entity, group of people, or a single person that rejects hierarchy, the word originally meant leaderlessness, but in 1840, Pierre-Joseph Proudhon adopted the term in his treatise, titled what, an work of nonfiction on the concept of property and its relation to anarchist philosophy by the French anarchist and mutualist Pierre-Joseph Proudhon, first published in 1840?

full_context: Document 1: Anarchism: Anarchism is a political philosophy that advocates self-governed societies based on voluntary institutions. These are often described as stateless societies, although several authors have defined them more specifically as institutions based on non-hierarchical free associations. Anarchism holds the state to be undesirable, unnecessary and harmful.
Document 2: The Poverty of Philosophy: The Poverty of Philosophy ( "Misère de la philosophie") is a book by Karl Marx published in Paris and Brussels in 1847, where he lived in exile from 1843 until 1849. It was originally written in French as an answer to the economic and philosophical arguments of French anarchist Pierre-Joseph Proudhon set forth in his 1846 book "The System of Economic Contradictions, or The Philosophy of Poverty."
Document 3: History of anarchism: Anarchism is a political philosophy that advocates stateless societies often defined as self-governed voluntary institutions, but that several authors have defined as more specific institutions based on non-hierarchical free associations. Anarchism holds the state to be undesirable, unnecessary, or harmful. While anti-statism is central, anarchism entails opposing authority or hierarchical organisation in the conduct of human relations, including, but not limited to, the state system.
Document 4: Pierre-Joseph Proudhon: Pierre-Joseph Proudhon (] ; 15 January 1809 – 19 January 1865) was a French politician and the founder of mutualist philosophy. He was the first person to declare himself an anarchist and is widely regarded as one of the ideology's most influential theorists. Proudhon is even considered by many to be the "father of anarchism". He became a member of the French Parliament after the revolution of 1848, whereafter he referred to himself as a federalist.
Document 5: Philosophical anarchism: Philosophical anarchism is an anarchist school of thought which holds that the state lacks moral legitimacy while not supporting violence to eliminate it. Though philosophical anarchism does not necessarily imply any action or desire for the elimination of the State, philosophical anarchists do not believe that they have an obligation or duty to obey the State, or conversely, that the State has a right to command. Philosophical anarchism is a component especially of individualist anarchism.
Document 6: Mutualism (economic theory): Mutualism is an economic theory and anarchist school of thought that advocates a society where each person might possess a means of production, either individually or in purely voluntary collectives, with trade representing equivalent amounts of labor in the free market. Integral to the scheme is the establishment of a mutual-credit bank that would lend to producers at a minimal interest rate, just high enough to cover administration. Mutualism is based on a labor theory of value that holds that when labor or its product is sold, in exchange, it ought to receive goods or services embodying "the amount of labor necessary to produce an article of exactly similar and equal utility". Mutualism originated from the writings of philosopher Pierre-Joseph Proudhon.
Document 7: Anarchy: Anarchy is the condition of a society, entity, group of people, or a single person that rejects hierarchy. The word originally meant leaderlessness, but in 1840 Pierre-Joseph Proudhon adopted the term in his treatise "What Is Property?" to refer to a new political philosophy: anarchism, which advocates stateless societies based on voluntary associations. In practical terms, anarchy can refer to the curtailment or abolition of traditional forms of government. It can also designate a nation (or anywhere on earth that is inhabited) that has no system of government or central rule.
Document 8: Individualist anarchism: Individualist anarchism refers to several traditions of thought within the anarchist movement that emphasize the individual and their will over external determinants such as groups, society, traditions, and ideological systems. Individualist anarchism is not a single philosophy but refers to a group of individualistic philosophies that sometimes are in conflict. Benjamin R. Tucker, a famous 19th-century individualist anarchist, held that "if the individual has the right to govern himself, all external government is tyranny."
Document 9: Anarchism in France: Anarchism in France can trace its roots to thinker Pierre-Joseph Proudhon, who grew up during the Restoration and was the first self-described anarchist. French anarchists fought in the Spanish Civil War as volunteers in the International Brigades. According to journalist Brian Doherty, "The number of people who subscribed to the anarchist movement's many publications was in the tens of thousands in France alone."
Document 10: What Is Property?: What Is Property?: or, An Inquiry into the Principle of Right and of Government (French: "Qu'est-ce que la propriété ? ou Recherche sur le principe du Droit et du Gouvernement" ) is a work of nonfiction on the concept of property and its relation to anarchist philosophy by the French anarchist and mutualist Pierre-Joseph Proudhon, first published in 1840. In the book, Proudhon most famously declared that "property is theft".
Document 11: Libertarian utopia: There have been many attempts and proposals to create a libertarian utopia. Anthony van Fossen writes that every tax haven is a variation on the theme of the sovereign libertarian utopia. The Pacific Islands have seen several attempts, such as the Republic of Minerva. Charter cities have been another proposal for breaking out of conventional political arrangements to create a system with much greater scope for innovation in rules. Robert Nozick's book "Anarchy, State and Utopia" contains a final chapter that describes a pluralistic libertarian utopia. Proposals for an anarcho-capitalist society are sometimes regarded as inherently utopian. David Boaz has argued that the consumer choice facilitated by a free market system would create a framework that could offer thousands of versions of utopia to suit the desires of different people.
Document 12: Anarcho-capitalism: Anarcho-capitalism is a political philosophy and school of anarchist thought that advocates the elimination of the state in favor of self-ownership, private property, and free markets. Anarcho-capitalists hold that, in the absence of statute (law by centralized decrees and legislation), society tends to contractually self-regulate and civilize through the discipline of the free market (in what its proponents describe as a "voluntary society").
Document 13: Property is theft!: Property is theft! (French: "La propriété, c'est le vol!" ) is a slogan coined by French anarchist Pierre-Joseph Proudhon in his 1840 book "What is Property? Or, an Inquiry into the Principle of Right and of Government".
Document 14: Against Method: Against Method: Outline of an Anarchist Theory of Knowledge is a 1975 book about the philosophy of science by Paul Feyerabend, in which he argues that science is an anarchic enterprise, not a nomic (customary) one. In the context of this work, the term anarchy refers to epistemological anarchy.
Document 15: Anarchist Manifesto: Anarchist Manifesto (or The World's First Anarchist Manifesto) is a work by Anselme Bellegarrigue, notable for being the first manifesto of anarchism. It was written in 1850, ten years after Pierre-Joseph Proudhon became history's first self-proclaimed anarchist with the publication of his seminal "What Is Property?".
ground_truth: What Is Property?