Social Darwinism, inspired by Charles Darwin's theory of natural selection, applies evolutionary principles to human societies, suggesting that competition and survival of the fittest drive social progress.

Auguste Comte, often referred to as the father of sociology, introduced the concept of social evolution, emphasizing the idea of progress and the development of societies through distinct stages.

Herbert Spencer, a prominent advocate of social evolution, believed that societies evolve through natural selection, where competition and adaptation to the environment lead to the survival of the fittest.

Cultural Evolution Theory posits that societies evolve through the diffusion and borrowing of cultural traits from other societies, leading to cultural change and adaptation.

Karl Marx, a prominent sociologist and philosopher, proposed the theory of historical materialism, emphasizing the role of class struggle and economic factors in driving social evolution.

Functionalism, as proposed by Emile Durkheim and others, argues that social institutions and structures serve specific functions, contributing to the overall stability and equilibrium of society.

Talcott Parsons' functionalist theory identifies four functional imperatives: adaptation (to the environment), goal attainment, integration (of various societal parts), and latency (maintenance of cultural patterns).

Symbolic Interactionism, as developed by George Herbert Mead and others, emphasizes the role of symbols, meanings, and interactions in shaping individual and social behavior.

Emile Durkheim proposed that social evolution involves increasing differentiation and specialization of social structures and functions, leading to greater complexity and interdependence.

Max Weber identified three types of legitimate authority: traditional (based on custom and tradition), charismatic (based on exceptional personal qualities), and legal-rational (based on laws and regulations).

Technological Determinism posits that technological advancements drive social evolution, shaping societal structures, values, and behaviors.

Max Weber proposed that social evolution involves increasing rationalization and disenchantment, where traditional beliefs and values are replaced by scientific and bureaucratic rationality.

Karl Marx's theory of historical materialism emphasizes class struggle as the primary contradiction driving social evolution, where the conflict between different social classes shapes societal change.

Conflict Theory, as developed by Karl Marx and others, emphasizes the role of power relations, class struggle, and domination in shaping social evolution.

Emile Durkheim proposed that social evolution involves increasing complexity and interdependence, where societies become more specialized and interconnected.