- Band: A small, often nomadic group with simple, egalitarian social structures and minimal formal leadership.
- Tribe: A larger unit comprising multiple bands or families, exhibiting more complex social structures but lacking centralized political authority.
- Chiefdom: A hierarchical system with a permanent chief and distinct social classes, representing a political structure more complex than a tribe.
Step 1: Understanding the political systems.
- Band: The simplest political system, characterized by minimal social structure.
- Tribe: More complex than a band, uniting several bands under a common leader or leadership group.
- Chiefdom: Exceeds the complexity of a tribe, featuring a central leader, often with defined roles and social stratification.
Final Answer:
\[\boxed{\text{The correct answer is (1) Band, Tribe and Chiefdom.}}\]