Isolationism. This meant limited influence and actions in an international scale.
#1) How are today's communication technologies and communicators different from those Orwell imagined in "1984"
Answer: The technology was used for controlling means by placing telescreens and clandestine microphones everywhere, at work, market places or even in the comforts of their own home. Today's technologies are not used for that purpose.
Recycling, waste disposal, public health, and water and air pollution control.
The Dark Ages were from 400-1400. It was called that because of the deterioration of the economies in Western Europe after the fall of the Roman Empire :)