Black Panther: Wakanda Forever continued Wakanda’s efforts to keep their vibranium safe as other nations pressured the country to share it, and a fan theory explains one vibranium mystery better than the Marvel Cinematic Universe’s movies have. Wakanda has become one of the most important settings in the MCU, as it’s not only the home of the Black Panther and the Dora Milaje, but it’s also a technologically advanced country and a source of vibranium. This nearly indestructible element has been used outside Wakanda for years, but its importance and potential weren’t widely known until after Wakanda let its barriers down.

https://screenrant.com/mcu-vision-black-panther-2-plot-theory/