raywest

Answer: There was a global war causing civilization to collapse after oil supplies were nearly depleted. The world then fell into a state of barbarism.

raywest ★

Answer: There was a war over oil which included nuclear warfare and the complete loss of civilization. People ended up like the biker gangs, loners like Max or the Refinery people who were trying to get to the presumably safe northern areas of Australia. In the narration the old man tells the whole story.

Answer: In the opening scene, the narrator explains about the fall of civilization with clips of war and social collapse.

Answer: If he grew up feral and was not around other humans, he would not have learned how to speak. Some functions, like language, have to be learned at an early age when the brain is at a critical development stage.

raywest ★

Answer: SPOILER ALERT: At the end of the film we learn that the narrator is in fact the feral child as an adult, and that he grew up to become the leader of the tribe. The feral child may have known how to speak, but chosen not to, or may have not yet mastered speech. Either way, he did eventually speak.