what roles does united kingdom have that the U.S does not have?

Question

is a world history question and is for 21 century not the 17 nor the 18 century but for the 21 century.
can someone help me?

Answer 1

The United Kingdom always supports the US in its foreign diplomatic actions.

Answer 2

The UK cares about the World Cup. The US does not. The UK is in the EU, the US is not. The UK is in the British Commonwealth, the US is not. The UK is tied to the pound, and possibly the Euro, the US maintains the dollar for the world.