who are the people involved in dark ages?

http://www.google.com/search?hl=en&site=&source=hp&q=dark+ages&oq=dark+ages&gs_l=hp.3..0l10.4160.5943.0.6219.9.8.0.1.1.0.277.1231.0j7j1.8.0.les%3B..0.0...1c.JYMZGXO1UO0

Read widely.