Answer:
What surrounds the world, yet dwells within a thimble?
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. The wind is my lover, one-legged am I. Name me and see me at home in the sky.
I have it, I donβt share it. If I share it, I donβt have it. What is it?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs my help. Yet many people are afraid to let me help them.
Left to right Iβm quite bright. Right to left I might bite.
People take me on walks and I run and have fun. What am I?