Avengers: Endgame has become the highest-grossing film ever. 1 / 8
Directors Joe and Anthony Russo deserve every credit for getting the film there. 2 / 8
The Avatar Twitter account posted a congratulatory image and message... 3 / 8
To which the Russo brothers recently responded via Instagram. 4 / 8
They thanked director James Cameron for being one of their sources of inspirations. 5 / 8
The Instagram post featured images from hits such as The Terminator, Titanic and Avatar. 6 / 8
Avatar reigned supreme at the box office for a decade, having earned $2.788 billion. 7 / 8
Avengers: Endgame recently surpassed that with $2.79 billion. 8 / 8