Answer:
I am useless when together but useful when I am broken apart. What am I?
The most famous dinner
I am a ship that can be made to ride the greatest waves. I am not built by objects but built by minds.
I am a king who's good at measuring stuff.
I may be of the eye, in order I am pie. In my center there is a star, I keep medics where they are. What am I?
I flow from the Homerβs mouth when he sees doughnuts.