Here's why:
* States: The term "state" is used in international law and political science to refer to independent sovereign entities with a defined territory, population, and government. They have the ability to enter into agreements with other states and are recognized as having the authority to govern their own affairs.
* Nations: This term emphasizes a shared cultural identity, history, and often language among the people living within the borders of a state. While a nation can be a state, a nation can also be a group of people who share these commonalities but may not have a defined state of their own.
Other possible terms:
* Country: Often used interchangeably with "state" or "nation," although it can sometimes refer to a specific geographical region.
* Sovereign entity: This term emphasizes the independent authority and autonomy of the entity.
* Political unit: A broader term that encompasses any organization with political power, including states, provinces, cities, or even non-governmental organizations.
The best word to use depends on the specific context and what aspects you want to emphasize.