Marxian theory is built upon several core pillars, including the concept of class struggle between the bourgeoisie and the proletariat, the theory of surplus value which explains exploitation, and the tendency toward the centralization and concentration of capital. Since all these elements are fundamental to Marx's analysis of capitalist development, none of them are incorrectly listed.

Karl Marx is the primary theorist behind the concept of historical materialism. He argued that the economic structure of society—the way goods are produced and distributed—forms the foundation upon which the legal, political, and cultural superstructure is built. This perspective suggests that changes in economic relations are the fundamental drivers of social and political evolution throughout human history.

According to Karl Marx, technological advancement is a primary driver of economic development. Marx argued that the constant revolutionizing of the means of production is a defining feature of capitalism. This technological progress increases productivity and changes the material conditions of society, which eventually leads to shifts in the social and economic structure of the state.

Marxists argue that class distinctions arose with the transition from nomadic hunter-gatherer societies to settled agricultural life. The ability to produce a surplus led to the accumulation of private property, which created a division between those who owned the means of production and those who did not. This shift laid the foundation for exploitation and the eventual development of the state to maintain class hierarchies.

Marxian Socialism emphasizes economic rights as the foundation for all other liberties. The theory argues that without control over the means of production and the assurance of basic economic needs, personal and political rights are merely formalistic and inaccessible to the working class. Therefore, securing economic rights is seen as the prerequisite for achieving true human emancipation and genuine equality in all other spheres of life.

Post-Marxism, notably developed by thinkers like Laclau and Mouffe, challenges the economic determinism of classical Marxism. It argues that the working class is not inherently revolutionary, that economic structures do not strictly dictate political or ideological outcomes, and that the traditional Marxist focus on class struggle as the sole driver of history is insufficient for understanding modern political pluralism.

The phrase 'Workers of the world, unite!' is one of the most famous slogans from The Communist Manifesto, written by Karl Marx and Friedrich Engels in 1848. It serves as a rallying cry for the international proletariat to organize and overthrow the capitalist system. This call reflects the core Marxist belief in the necessity of global class solidarity to achieve a socialist revolution and eventually a classless society.

Marxist theory posits that the state is not a neutral arbiter but an instrument of the ruling class used to maintain its dominance over the proletariat. According to Marx, the state serves to protect the interests of those who own the means of production, thereby perpetuating class struggle until the eventual transition to a classless society.

John Maguire, in his analysis of Marxist political theory, explores the concept of the state as a tool of the ruling class. The statement reflects the Marxist critique that in a capitalist society, democratic institutions and the state apparatus often provide a facade of representation for the working class while actually serving the interests of the bourgeoisie, thereby rendering the representation 'illusory' rather than substantive.

M.N. Roy's political trajectory began with revolutionary activities in his youth (1), followed by his engagement with international communism and attendance at the Comintern (2). Later in his life, he moved away from orthodox Marxism toward his own philosophy of Radical Humanism (3). His philosophical evolution involved a complex critique of violence, though the specific sequence provided in the option reflects his historical progression from revolutionary activism to philosophical humanism.