Trailers for Avengers: Infinity War have already made it clear that Earth's Mightiest Heroes will make their last stand against Thanos in Wakanda. But now stars Mark Ruffalo and Chadwick Boseman have explained why the African nation plays such a key role in the Marvel Studios sequel.

During an Infinity War set visit attended by Screen Rant and other outlets, the actors were asked how important the country and its advanced technology are in the fight against Thanos. "Hugely," responded Ruffalo, who reprises his role as Bruce Banner. "There's no way to overcome what they're facing without in some way coming to terms with their differences and embracing their diversity. That's essentially a core value of the film and that together, only together, can they triumph."

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"You definitely see where some of the [technology] gap is," Boseman added. "You see where the gap is and what some things we're able to do that they're not able to do, and that one you will definitely find."

Ruffalo also said the film contains some "great Science Bros. stuff," with Tony Stark and Bruce Banner teaming up again. Infinity War will see the intellectual duo become a trio with the addition of Doctor Strange.

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Directed by Joe and Anthony Russo, Avengers: Infinity War stars Robert Downey Jr., Chris Evans, Chris Hemsworth, Mark Ruffalo, Jeremy Renner, Scarlett Johansson, Anthony Mackie, Paul Rudd, Elizabeth Olsen, Tom Holland, Benedict Cumberbatch, Chadwick Boseman, Chris Pratt, Zoe Saldana, Dave Bautista, Bradley Cooper, Vin Diesel, Tom Hiddleston, and Josh Brolin. The film arrives April 27.