Wakanda is a country in the Marvel Universe. It is featured in The Avengers: Earth's Mightiest Heroes and appears in Avengers Assemble. It was first mentioned in the Marvel Cinematic Universe in Avengers: Age of Ultron and later appears in Captain America: Civil War and Black Panther.
Wakanda is a nation that keeps its old tribal traditions, while still adding technological advances one of the only resources found in Wakanda is the scarce metal Vibranium.
When Fury informed the Avengers about the situation, T'Challa see that the troops of the Kang the Conqueror were attacking Wakanda. Cap says to Black Panther that if he wants he can go to help his people, his teammates agree with his decision then he went to Wakanda to save his people. Later, when almost the entire planet fell under the control of Kang and his troops, a soldier informs Kang that the fleet that was attacking Wakanda had been destroyed.
When Iron Man reveals the existence of the Skrulls, he decides return to Wakanda knowing he could not trust anyone. Already in Wakanda, T'Challa orders his guards to prepare for an invasion.
Miss Marvel followed a Skrull ship to Wakanda, when that ship opens she sees the Avengers. They tell her the story how they were captured by the Skrull. But all this was a farce to trick Carol. When the Skrulls and Carol arrive at Wakanda, Black Panther appears leading the forces of Wakanda. After defeating the Avengers skrull, Wasp and Barton seek help from Black Panther but he refuses because his duty is to protect Wakanda.
Shortly after the Skrull invasion, the Avengers went to Wakanda to repair Captain America's Shield. Cap asks Black Panther to return to the Avengers but he refuses. Later, Black Panther with the Avengers had to face Vision, who was looking for Vibranium. Eventually, the Avengers defeat Vision and T'Challa decides to return to be an Avenger.
Ulysses Klaue went to Wakanda to steal a large amounts of Vibranium. However, he was discovered by the Wakandian population, who tattooed it on his neck the word "thief".
After the skimish with the Avengers, Bucky and Captain America were granted asylum in Wakana by T'Challa. There, Bucky chose to go back into cryogenic sleep until the programming HYDRA implanted on his mind could be cleansed.