The closest line of latitude to Mexico City is the Tropic of Cancer, at 30 degrees north. Mexico City itself is close to 19° N.
The capital of Mexico
Illinois is closer to the nearest capital line of latitude
The center of Mexico City is located at 19.42° north latitude 99.13° west longitude. Would you ask someone "What line on the ruler is closest to your height ?" I'm guessing you'd ask him "How tall are you ?" Forget about "lines". There is no standard set of of latitude and longitude lines from which you have to choose one that's somewhere close.
There's no city there. That point is on the Navajo Reservation in New Mexico, about 2.6 miles east of the Arizona state line. The nearest town is Navajo, New Mexico, about 6.6 miles south-southwest of the point, and the center of Albuquerque is about 150 miles to the southeast.
prime median
Depending on what you consider "near", any number of cities might qualify. But you'remost likely fishing for Mexico City, centered about 70 miles southeast of that point.Mexico CIty is the nearest national capital to that location. The exact location of Mexico city in coordinates is 19.420492, -99.138260. Mexico City is almost 100 km south of 20 N, 100 W.
None; Baja California is further to the north. Hawaii is on the same latitude than Mexico City, capital of that country.
Mexico City Metro Line A was created in 1991.
Mexico occupies all latitudes from about 14.53° north to about 32.72° north.
Mexico City Metro Line B was created in 1999.
The 47 degree S line of latitude passes south of Tasmania, so the nearest city would be Hobart. South East Cape is the southern most point of Australia at 43.39 degrees S latitude.
23 degrees North is a line of latitude. The Tropic of Cancer is around 23.5