Answer:
Who has married hundreds but always been single?
I start with āeā end with āeā. I have whole countries inside me. What am I?
It's in your hand though you cannot feel it. Only you and time can reveal it.
Tickle with your fingers and a song it will sing. Be careful, though, you may break a string. What is it?
We traveled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. How can that be possible?
I start with T end with T and within me is T.