1920s: London's population is around 7.4 million.

1990s: London's population is around 7.0 million.

1920s: Cubism, dadaism, and surrealism are all new artistic movements that develop among European painters, and these movements influence other artistic fields. Cubism relies on geometric forms, shapes, and designs; dadaism denounces conventional artistic standards; and surrealism draws from the unconscious and the world of dreams.

1990s: The field of visual arts offers many formats and incorporates multiple media, such as words and television images. Some artists implement modern technologies and create interactive pieces.

1920s: British women over the age of twentyeight have the right to vote (since 1918). Not until 1928 will women be made equal to men in terms of voting.

1910s and 1920s: The average British household has three children...