What Am I Riddles

Question: You use me. I keep you neat. Every once in a while you empty me out. What am i?

Question: I am both black and white. I go with the flow and my loyalty never wavers.

Question: I can be shared by many or spread to few, I am as fragile as silk yet as strong as steel. Wars have been fought in my name, generations defined by me. What am I?

Question: I always listen to my Master, I never disobey. From my path I never stray to destroy what's in my way. What am I?

Question: im fast and slow I go everywhere you go yet you cannot see me im in tree's in the sky in plants and in your body pretty much you need me to survive what am I?