Final answer:
Theocratic governments do not necessarily have a single ruling party, oligarchies involve rule by a small elite group, parliamentary systems do not lack a head of state, and authoritarian regimes do not emphasize citizen participation.
Step-by-step explanation:
The characteristics of each government type can be described as follows:
- Theocratic governments: These governments are ruled by religious leaders and the governing laws are based on religious beliefs. They do not necessarily have a single ruling party.
- Oligarchies: These governments involve rule by a small, elite group of individuals who hold all political power. This group can be distinguished by factors such as wealth, military, or religious hegemony.
- Parliamentary systems: These governments have a head of state (monarch or president) and a head of government (prime minister) who is selected by the legislature. They do not lack a head of state.
- Authoritarian regimes: These governments emphasize rule by a single leader or small group with absolute power. They do not prioritize citizen participation.