Answer:
In all the world none can compare I am a tiny weaver my deadly cloth so silky and fair.
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
I am ten little beans your look at everyday.
I am a king who's good at measuring stuff.
Man walks over, man walks under, in times of war he burns asunder. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.