What Am I Riddles

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?

Question: Body of Steel Spits out Fire Feared by Man No Trace of Wire