Sweet and fragrant is my specialty and the rest you can say it's history

A small little thing, with a heck of an effect, once lodged in a lions paw. Take it out and make a friend, just ask Androcles.

I have many ribs but no lungs, and I stand tall to keep you safe. I am a wall made of many parts, yet you can see the sky through my gaps if you stand close. I am often made of wood, sharpened at the top like a row of pencils, meant to discourage a climb. I am not a building, but I define where the building begins. What am I?

For six days straight, I toiled away. On the seventh, I took a vacay.

Invisible force that topples kings, fuels stars, and whispers through wires; it grants strength to those who have it. Wars begin and end because of men and their need for more of this.