Answer:
I break down buildings, I crumble mountains but you can't see me. What am I?
Although glory but not at my best. Power will fall to me when the man who made me dies.
When you need me, you must find me. When you find me, you no longer need me. What am I?
I mean goodbye for South Americans.
If you look, you cannot see me. And if you see me, you cannot see anything else. I can make anything you want happen, but later everything goes back to normal. What am I?
A little house full of meat, no door to go in and eat.