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?
Related documents: [0]  [DOC] 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". [END] 
[1]  [DOC] 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. [END] 
Answer: 
What Is Property?
What Is Property?