Black Panther - Daily Struggle

Which is why the movie ends with Wakanda ending it's isolationism and sharing it's technological breakthroughs with the world.

Also Wakanda is not strong because of isolatism or the fact that it's people are all black. Rather it does well because it's sitting on a mountain of super rate super metal.

It also hurt, leading to a stagnation of culture and a holding to extremely outdated values, like election by combat.