If you pay really close attention during Black Panther’s mid-credit sequence, you might notice an interesting detail about how the political climate of the Marvel Cinematic Universe is not quite the same as that of the real world.
During the mid-credits scene, T’Challa delivers a speech at the United Nations, and it you look carefully, you can see the Welsh flag hanging on the far right. Thanks to Radio Times for sharing the pic.
In real life, Wales is part of the United Kingdom, so it would be represented by the Union Jack. The flag that we see the Welsh flag on its own strongly indicated that Wales is actually a separate nation within the MCU rather than being part of the UK.
The MCU is renowned for its attention to detail, so I have a strong suspicion that establishing Wales as an independent nation will go on to become a major plot detail down the road. Granted, Britain hasn’t played a huge part in the MCU so far, but it’s probably only a matter of time before Disney finally turn their attention towards the likes of Captain Britain, Black Knight, Union Jack, and other British Marvel heroes. How Wales being an independent nation will play into any inevitable onscreen stories Disney plan to tell using such characters remains to be seen, but I’m willing to bet it will be a pretty big plot element.
Black Panther was directed by Ryan Coogler and stars Chadwick Boseman, Lupita Nyong'o, Michael B. Jordan, Forest Whitaker, Angela Bassett, and Martin Freeman. It's currently grossed a worldwide total of $897,705,037, and will surpass $1 billion by the end of the month.