There is no clear and precise definition of a nation. Examples:
- Is Great Britain 1 country?
- Is Great Britain 3 countries, England, Scotland and Wales?
- Should we be talking about Great Britain or about the United Kingdom of England, Scotland, and Wales and Northern Ireland?
- Is the United Kingdom just part of a bigger nation, the European Union?
Presumably Sub-nationalism is identification with a group smaller than a nation however a nation is defined.
Sub-nationalism has been defined as: