What country is 40 degrees north latitude and 6 degrees east longitude?

Answer 1

There's no country there. You've succeeded at the difficult task of finding a point

in the Mediterranean Sea that can't be associated with a specific country.

That point is located in the 'Western Basin' of the Mediterranean, about 95 miles east

of the Spanish island of Menorca, 130 miles west of the Italian island of Sardinia,

215 miles south of the coast of France, and 220 miles north of the coast of Algeria.

Answer 2

That point is in north central Sudan, about 41 miles northeast

of the center of Khartoum.