Answer:
Everybody's got one.
What is part of you and all around you but if it entangles you, it will kill you?
Every country has one, though we are not the same. Waving to our citizens, throughout the wind and rain. What is it?
I saw the dead bring forth the living. I saw the living bring forth the dead. What did I see?
Split me in half, and you get me and another me. What word am I?
People take me on walks and I run and have fun. What am I?