At this point you're either horrified or excited about the United Kingdom leaving the EU. Well, maybe you don't know what that entails exactly, so I'm going to try and take all of the frills away and leave the important bits.
First of all, what is the EU? It's alright if you don't know, I'm not going to judge you. Apparently a whole bunch of British, Irish and Scottish citizens searched "what is the EU" on the Internet right after voting to either leave or stay, so that certainly does not bode well. The EU, or "European Union", is a "politico-economic union of 28 (now 27) states primarily in Europe".
Now, what is the United Kingdom? It's not Europe; Europe's the continent. The United Kingdom is composed of Britain, Scotland, Wales, and Northern Ireland. The majority of citizens voted to leave, and the minority voted to stay. Which means much more than it usually would, seeing as the majority lead at a "whopping" 51.9%, and the minority hovered at around 48.1%.
This tells us a few things; the United Kingdom is very much divided on economic and political issues, and that the issues are so problematic that it would require being the first country to leave the European Union.
Alright, now for a few things from both ends of the spectrum. This may be good for the United Kingdom in the long run, but the short term will most likely be rocky; an unstable British Pound Sterling is testament to the rough economic waters the UK has found itself it, but various trade agreements and promise of support may herald economic prosperity in the future. Many proponents of the departure have stated that the market structure of the EU was detrimental to the United Kingdom's economy, so there's that. Many people argue that the UK was essential to supporting the economies of weaker nations, so when it comes to the economic situation you're either extremely conservative or extremely liberal (for the most part).
As far as social issues go, immigration was definitely a contributing factor to the decision to leave. You're probably familiar with the conflicts in Syria and the Middle East, as well as Eastern Europe. War and conflict have pushed people from their home countries westward, and with the good, innocent people came unsavory individuals. So, it comes down to either forsaking the whole in the grounds that there are spoiled parts, or trying to deal with the spoiled parts. It's a personal decision.
Undoubtedly, this decision will affect economies throughout the world, and may spark change in other countries; several other countries may have the beginnings of their own departures. Positive or negative, these changes are here to stay, and it is the world's task to deal with any consequences (fortunately, or unfortunately).
More on this as events progress.
Stay cl(ass)y, people.
