Chapter Two: Herbert spencer Evolution- Unilinear or multilinear .. Chapter Three: Emile durkheim Social fact Functional Explanation a. Mechanical Solidarity/ Organic Solidarity e. Compare the differences between mechanical Solidarity and Organic Solidarity• Chapter Two: Herbert Spencer • Evolution - Unilinear or Multilinear • Chapter Three: Emile Durkheim • Social Fact • Functional Explanation • Mechanical Solidarity/ Organic Solidarity • Compare the differences between mechanical Solidarity and Organic Solidarity