The period between the end of
World War I and the start of
World War II. The generation (e.g.
George Orwell,
Jessica Mitford,
Evelyn Waugh,
Nancy Mitford) which was born in the early years of the
20th century reached adulthood during this time. In the 1920s some of them rebelled against their elders who had (they thought) caused World War I; and they spent the politicized
1930s aligning themselves either for or against
Adolf Hitler,
Fascism,
General Franco,
Communism, and the working-class.
In Britain, the rights and comforts that were previously enjoyed only by the rich and upper-class began to be extended to the middle- and working-classes. But there was also widespread unemployment, the lowering of wages as the pound lost value in the wake of abandoning the Gold Standard, the disillusionment of repatriated servicemen at the end of the first World War as they returned home injured, disfigured, or just plain unable to find work; and the General Strike took place in 1926.
Life between the wars was more complicated and good and bad less clearly-defined than they were before the first World War. But this write-up is just a generalization of the complexities of those years.