[ELI5] How did Hollywood become the center for pop-culture and the film industry both globally and in just the USA?

Question

[ELI5] How did Hollywood become the center for pop-culture and the film industry both globally and in just the USA?

In: Other

Answer 1

Hollywood isn’t the centre of Pop culture globally… which is far.too diverse to have a ‘centre’.

Film… well that’s a different matter and other responses have nailed it.