Answer:
Though I am only two words I have thousands of letters in me
The time between daylight and darkness when blood drinkers like to come out
I cannot be burned in fire or drowned in water. What am I?
Flat as a leaf round as a ring. I have two eyes but can't see a thing.
I am a king who's good at measuring stuff.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.