NOTE: Post Updated February 2019
At this point in time, the roster of Avengers is hardly Earth’s Mightiest Heroes. 50% of the team is Black Knight and Hawkeye.
Nice splash page, though.
Anyway, this is basically a Black Panther solo story, where he battles for the kingdom of Wakanda against Man-Ape.
In the end, Man-Ape dies from a bunch of stuff landing on him when The Avengers bust in to save T’Challa. So, The Avengers do cause a death here.
Creators: Roy Thomas and John Buscema
For the complete history of the MU, year by year, go here.