Answer:
It describes an era in history during which lights was hard to come by.
I am a teacher but I have a problem. Every time the students come into my class my eyes bounce and flutter all over the place. Why is this?
What is on its way but never arrives
What do you call a horse that moves around a lot?
What did the rain cloud wear under his raincoat?
Both a currency and an antlered male. What is it?