Answer:
I am a person who pretends to be someone else
I keep growing and am practically indestructible. I get eaten, but always come back. I survive cold and lie everywhere. You see me everyday. What am I?
You bind me and I walk. You loosen me and I stop. What am I?
I hold two people together but touch only one. What am I?
Although glory but not at my best. Power will fall to me when the man who made me dies.
My days are numbered. What am I?