So can you guess which flags together form the Union Jack?
The cross of St. George, that is the national flag of England.
The cross of St. Andrew, that is the national flag of Scotland.
The cross of St. Patrick, that represents Northern Ireland.
But then, how is Wales represented in the Union Jack? As Wales was not a Kingdom, but a Principality it could not be included on the flag.
Here you have the national flag of Wales.