• Methodological consolidation of sociology as a formal discipline through emphasis on theory, sociological methods, and conceptual progress across early 20th century works [1], [2], [3], [9], [20].

• Socioeconomic inequality, urban life, and class structures recur as core concerns, with poverty, social groups, and caste/race contexts informing social change [5], [8], [11], [16], [19].

• Racialization, color politics, and race relations analyzed as systemic forces shaping societies; anti-racism and race-problem studies anchor this thread [5], [8], [17], [19].

• Socialization, identity, and collective behavior as mechanisms of social change and social consciousness, linking individual and group dynamics [6], [7], [13], [18].

• Cultural history and anthropology framing sociology through social history, caste, and environment, highlighting cross-cultural contexts [4], [10], [16], [19].