In this part of the world, it would be back to our "hunter-gatherer" roots.
Is This the Safest Time To Be Alive?
The huge improvement of one quarter of the worlds population that is china is a good piece of evidence to consider. It's almost a quantum leap of progress in the long term picture.
In the big picture, in many ways we have only just begun to be more civilized in many aspects. If i was to be transported to another time, i would opt for a future time. I'ld take my chances somewhere 500 yrs or maybe a 1000 yrs in the future, rather than the past. 'Course, the present is pretty good...