Answer:
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away yet lust for me keeps me locked away.
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
I am what bring things together. Without me everything you see would be a total mass or debris everywhere.
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I’ve told you all I cannot tell you more.
I am a king who’s good at measuring stuff. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.