People use latitude and longitude lines mostly to identify

With latitude and longitude lines, we can exactly identify every place on earth, and do so in a reliable, unambiguous way. A certain point can be assigned to only one latitude line and to only one longitude line, and by knowing both of these lines we can determine the exact location of that point with certainty.

How is this a question? where are the answer choices?

Because they have free health care and is a very nice country : )