Both dates occurred after two world wars, the 1920s preceded the World War 1 while the 1950s preceded World War 2.
The mass media similarity between these two is that it focused more on entertainment and advertisements. Because the war ceased already, films and entertainment shows flourished greatly.
Answer:
The Aztecs.
Explanation:
The Mayans and Aztecs used a complex system of writing using glyphs.
jsut search Fonts on appstore, some keyboards already have letters like: ø, ß, ç, ā
