Concept:
This question requires identifying the time period or the specific thinker associated with each concept to arrange them from the earliest to the most recent.
Step 1: Identifying Concepts and Origins.
• A. Community of Wives: Plato (Ancient Greece, approx. 4th Century BC). Described in *The Republic*.
• C. Theory of two swords: Pope Gelasius I (Medieval period, late 5th Century AD). Deals with the separation of sacred and secular power.
• B. General will: Jean-Jacques Rousseau (18th Century Enlightenment). Central to his social contract theory.
• D. Dictatorship of the proletariat: Karl Marx (19th Century). A key transitional phase in Marxist theory toward communism.
• E. Behaviouralism: 20th Century (post-WWII era). A movement in political science focusing on empirical, scientific analysis of political behavior.
Step 2: Arranging Chronologically.
• A (Ancient) $\rightarrow$ C (Medieval) $\rightarrow$ B (Modern/18th C) $\rightarrow$ D (Industrial/19th C) $\rightarrow$ E (Contemporary/20th C).
Step 3: Final Order.
The sequence is A, C, B, D, E, which matches Option (4). This timeline tracks the evolution of political thought from classical idealism to medieval theology, through Enlightenment philosophy, revolutionary socialism, and finally modern social science.