What does it mean for the children in the film to live in a modern city?

What does it mean for the children in the film to live in a modern city? Are they able to enjoy the progress that Mexico is experiencing in the 1950´s? Why did Buñuel choose children as the protagonists?

https://www.youtube.com/watch?v=jV1WArrh5-k

My Master Papers
Calculate your paper price
Pages (550 words)
Approximate price: -