Wakanda – Iron Man 2

Iron Man 2 is chalk full of Easter eggs, which makes sense since it was the first step in Marvel's plan to fully expand its cinematic universe. Near the end of the film, when Tony Stark meets with Nick Fury, there are several computer screens with a few Easter eggs for fans to find. One is footage from The Incredible Hulk, while the other is a small nod at Wakanda, the highly advanced fictional African nation that Black Panther calls home. The map on the wall behind Tony features a dot in Africa that points to Wakanda, a place that wouldn't come into focus on film until Avengers: Age of Ultron in order to pave the way for Black Panther's debut in Captain America: Civil War. So, it serves as both a bit of fan service and universe building. Well done, Marvel, well done.