Some food for thought:
Technologic wonders and adventures: Jules Verne
1902 - 3 millions of telephones (US)
Dark industrial SF: H. G. Wells
1917 - World War I
Hero SF: John Carpenter of Mars, Buck Rogers
1929 - Economic crisis
Political SF: Foundation, Robert A. Heinlein
Technologic wonders and adventures: Star Wars
198x - Internet
Dark technologic SF: Cyberpunk
2001-2004 - Middle East war
Hero SF: Transformers, Ironman, Hancock
2008 - Economic crisis
Political SF?
Edit: Typos fixed.
“Chrisis”???? It’s a kappa in Ancient Greek.
Yup. Long exposure to wicked phonetics messes with my orthography.