Answer:
Soldiers line up spaced with pride. Two long rows lined side by side. One sole unit can decide, if the rows will unite or divide.
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
Voiceless it cries, wingless flutters, toothless bites, mouthless mutters.
What can answer in any language? What can speak without a mouth? What can sing without an ear?
What building has the most stories?
What did the piece of wood say when he saw the screwdriver and screws approaching?