What Am I Riddles

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

Question: I will reward you with riches if you show acts of consideration. However, if your acts are ominous, I reward retribution. What am I?