British Empire: An empire composed of various territories ruled or administered by the United Kingdom. It's like a huge family with London as the head of the household, managing and influencing its members.
Thames River: A major river flowing through southern England, including London. Like a highway that connects different cities, this river connected London to other parts of England and beyond for trade and transportation.
Parliament: The supreme legislative body in the United Kingdom, located in London. Think of it as your school's student council but on a much larger scale - making rules and decisions for everyone in the country.