Final answer:
Émile Durkheim defined social cohesion as the necessary interconnectivity of all parts of society working in harmony as an integrated whole. He emphasized understanding collective behavior and the role of shared values in maintaining social stability.
Step-by-step explanation:
Émile Durkheim, a sociologist, believed that all parts of society must work together in harmony as an integrated whole in order for society to function effectively over time. He referred to this concept as social cohesion. Durkheim argued that society is held together by shared values, morals, and attitudes, and that studying collective behavior is different from studying individual actions. He emphasized the importance of understanding social facts such as laws, customs, and religious beliefs in order to comprehend society.