Originally Posted by DrCosmic
Nothing to do with the 616 Marvel Universe, but everything to do with the Marvel Cinematic Universe, where things start out plausible in the real world, and the history of the MCU doesn't include Wakanda as a super power.
The history of the MCU is whatever they decide it is. Why assume we know everything already? Stark didn't know about SHIELD in the first Iron Man movie, but it already existed. At the end of that movie Fury says something to Stark along the lines of "You think youre the only superhero out there?"