What does post 1940 mean?

Answer 1

POST, in this case, refers to "something that occurs immediately AFTER something happens--such as post war--and remains such unless it occurs again.

ANTE means "before"--such as antebellum, referred to the era before the Civil War; anteroom--a room at the front of a house that leads to other rooms, or a waiting room (like in a clinic or hospital).PRE also means before, such as the "preface" of a book means the pages that come before chapter 1.