The Union Jack, also known as the Union Flag, is the national flag of the United Kingdom. It combines the crosses of three countries: Saint George's Cross of England, Saint Andrew's Cross of Scotland, and Saint Patrick's Cross of Ireland. The flag's design reflects the historical union between these nations. The Union Jack is a prominent symbol of British identity and is flown on government buildings, during national events, and at British embassies worldwide. Its distinctive design makes it instantly recognizable, representing the UK's rich history and cultural heritage. The flag is an important national emblem, evoking pride and unity among the British people.