Question

The area around Istanbul, the Bosporus, and Asia Minor are now part of the country of:

Answer 1

The correct answer is:
Turkey.

Istanbul is a city in Turkey - the biggest city in the country (but not the capital).

Asia Minor is the Peninsula where most of the Turkish land lies - so it's almost equivalent to the land of Turkey.

Bosphorus is a strait - and the land on both sides of the Strait belongs to Turkey.