Answer:
A setting that proved to be deadly for Abraham Lincoln.
They are Dark, and always on the run. without the sun, would be none!
Round and round I go never stopping in a continuous flow. I hang out with numbers each and every day and nothing ever gets on my way. What am I?
Of these everyone has ten, part of two wholes at the arms end. What are they?
Blind but cruel.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.