Kinship_And_Family_Organisation_System encompasses the fundamental mechanisms through which societies organise familial relationships, trace lineage, and structure intergenerational connections. This class includes both the technical systems for determining kinship affiliation (Descent, Bilateral_Descent) and the cultural values that prioritise family solidarity and obligation (Familism). These systems serve as foundational organizing principles that influence inheritance patterns, social support networks, residence choices, and individual identity formation within family contexts. The variation within this class reflects different cultural solutions to universal human needs for belonging, security, and continuity across generations. Understanding these systems is crucial for analysing how societies balance individual autonomy with collective family responsibilities, and how kinship structures adapt to changing social and economic conditions while maintaining their essential functions.