En que época se basa el libro UN mundo feliz

a) hostility to or prejudice against jews.

b) the holocaust, also referred to as the shoah, was a genocide during world war ii in which nazi germany, aided by its collaborators, systematically murdered approximately 6 million european jews             , around two-thirds of the jewish population of europe, between 1941 and 1945.

what are the options so i can answer it

6ix9ine ft. lil baby tic toc.

it's lit.