90° north latitude is a single point ... the north pole.
Longitude is meaningless there, since all of the meridians of longitude
converge at the poles.
There is no state there.
The Asian continent is located at this intersection of longitude and latitude.
The gulf of Oman
Baku the capital and largest city of Azerbaijan.
Persian Gulf
New Mexico
The intersection of 60 degrees north and 120 degrees east is located in Asia, specifically in northern Mongolia. This region is characterized by a continental climate and is part of the vast steppe landscape typical of central Asia.
On I-71 just north of the center of Columbus, OH.
Thailand
New Orleans - Louisiana
South-East; the point in question is in the English channel.
The gulf of Oman
The Persian Gulf.