Revolutions of 1848 carried out, occurred in Greater Poland. Next, the middle classes began to agitate. Karl Marx and Friedrich Engels, working in Brussels, had written "Manifesto of the Communist Party" (published in German in London on February 21, 1848) at the request of the Communist League (an organization consisting principally of German workers). Following the March insurrection in Berlin, they began agitating in Germany. They issued their "Demands of the Communist Party in Germany" from Paris in March; the pamphlet urged unification of Germany, universal suffrage, abolition of feudal duties, and similar middle-class goals. The middle and working classes thus shared a
Punctuated equilibrium in social theory Punctuated equilibrium in social theory Punctuated equilibrium in social theory is a method of understanding change in complex social systems. The method studies the evolution of policy change, including the evolution of conflicts. The theory suggests that most social systems exist in an extended period of stasis, which are later punctuated by sudden shifts in radical change. The theory was largely inspired from the biological theory of punctuated equilibrium developed by paleontologists Niles Eldredge and Stephen Jay Gould. The punctuated equilibrium model of policy change was first presented by Frank Baumgartner and Bryan Jones in 1993, and has increasingly received