When you give a latitude and a longitude, that nails it down to a single point on Earth, so it's not possible for a whole country to be right exactly there.
The point 15° N / 105° E is located in far eastern Thailand. It's about 18 miles southeast of the city of Ubon Ratchathani, 32 miles from the border with Laos, and 300 miles east-northeast of the capital at Bangkok.
