The United Kingdom (UK) is a sovereign country located off the northwestern coast of mainland Europe. Its full official name is the United Kingdom of Great Britain and Northern Ireland.

What does the UK include?
The UK is made up of four constituent countries:
| Country | Capital | Notes |
|---|---|---|
| England | London | Largest and most populated |
| Scotland | Edinburgh | Has its own parliament and legal system |
| Wales | Cardiff | Has its own parliament and language (Welsh) |
| Northern Ireland | Belfast | Shares the island of Ireland with the Republic of Ireland (which is a separate country) |
Common confusion: UK vs. Great Britain vs. England
| Term | Definition |
|---|---|
| United Kingdom (UK) | England + Scotland + Wales + Northern Ireland (the full sovereign state) |
| Great Britain | The island that contains England, Scotland, and Wales (does NOT include Northern Ireland) |
| England | Just one of the four countries within the UK |
Example:
- Someone from Scotland or Wales is British and from the UK, but they are not English.
- “Great Britain” is a geographical term (the island), not a political one.
The UK in the world
- It is a permanent member of the UN Security Council.
- It is a nuclear power.
- It was a member of the European Union (EU) until it left on January 31, 2020 (Brexit).
- It is a constitutional monarchy – the King is the head of state, but the Prime Minister and Parliament run the government.
- The UK is made up of four countries, each with its own distinct culture, history, and in some cases, legal and educational systems.
Historical context
The UK was formed through a series of unions:
- 1536: England and Wales united.
- 1707: England and Scotland united to form Great Britain.
- 1801: Great Britain and Ireland united to form the United Kingdom of Great Britain and Ireland.
- 1922: Most of Ireland became independent (now the Republic of Ireland), leaving Northern Ireland as part of the UK.
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