No real ideas for a title but a bit of random advice.
An EPQ is not really about what you say but how you say it.
The person marking it may know nothing about the topic.
If you pick anything too current you may struggle to get the range of suitable sources you need for top marks.
It's generally best to make the title of an EPQ a question, e.g. How did the Winter of Discontent of 1979 affect the UK balance of payments from 1980-1985? Did the UK's decision to leave the exchange rate mechanism in 1992 have lasting effects on our cooperation with the rest of the EU?
(warning: I just made those up but have never studied anything to do with economics or politics)
You also don't need a final title at the start - in fact you can gain marks by refining your title on the basis of what you discover in your Lit review, so don't be too hung up on your title being perfect at the beginning.