Answer:
These sea's helped with trade with others countries!!, India was certainly lucky as trade is necessary for obtaining resources goods and items they have no abundance of. These routes were essential for their trade ships to reach Africa and the Middle east and other Major trade areas.
I am not completely sure but would it be answer number 4? Sorry if I am wrong, it just makes more since to me.
A)
International technically means worldwide or nationwide so definitely more than one nation :)