Q: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
(CNN) Britain's stunning vote to leave the European Union is both historic and world-changing. But what does it really mean for folks living on the other side of the Atlantic? Potentially, everything -- the economy, national security, even the race for president. Here are five ways Brexit will affect Americans: It could hurt the economy The UK is the world's fifth-largest economy and one of the United States' largest trading partners, so if it catches a cold, we may get a little sick, too. When the pound dropped to 30-year lows as the results came in and British stocks got pounded, it was no surprise when Wall Street tumbled more than 500 points right after the opening bell Friday morning. So yes, your 401k's probably a little smaller right now.Brexit isn't just a big deal for Europe: it affects America tooIt might be a threat to the U.S. economy 
 Question:There's a real fear that increased unemployment in the UK and all the uncertainty could push _ into a recession, and it could take America's economy down with it.
A:
Britain