British history and symbols: vocabulary exercise

Complete the following sentences about British history and symbols using the correct terms from the list.

1. The Magna Carta was signed in $1215$. It is often considered a fundamental symbol of ________.
2. The national flag of the United Kingdom, which combines the crosses of England, Scotland, and Northern Ireland, is called the ________.
3. The primary London residence of the British monarch is ________.
4. Queen Victoria reigned during a period of great industrial change, from $1837$ to $1901$. This era is known as the ________ era.

Words to use: Union Jack, Buckingham Palace, Law and Liberty, Victorian.