The question is ambiguous. It could refer to:
Interpretation 1: Countries with a Unitary Government Structure
Several countries have a unitary government, meaning they are not divided into smaller, federated states with significant autonomy. Examples mentioned in the provided text include Singapore, Monaco, and Vatican City. These are small city-states with a single governing body. They don't have states in the same way that the United States does.
Interpretation 2: Countries with Only One First-Order Administrative Division
This interpretation is more nuanced. While many countries have multiple provinces, regions, or departments, some may have only one primary administrative division. Pinpointing a country that fits this description precisely requires extensive research beyond the provided sources, as the term "state" has varying meanings in different contexts.
Interpretation 3: Misunderstanding of "State"
The question might stem from a misunderstanding of the term "state." In the context of the United States, a "state" refers to a distinct political entity within a federal system. However, many countries do not use the term "state" in this way. Therefore, the question needs clarification to properly address the intended meaning of "state."
The provided text mentions Nebraska's unicameral legislature (a single-house system), but this refers to a legislative structure, not the number of states within a country.
