Answer:
My children are near and far. No matter that I know where they are. The gift I give them make their day. But if I were gone they would wander away.
What kind of running means walking?
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
Pirates put their booty in it.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.