What is the southernmost capital city in the united states

In the continental US= Austin, Texas

Overall US= Honolulu, Hawaii

Explanation:

Although Florida is the southernmost state in the continental U.S., and home to the southernmost point in the contiguous 48 states, its capital of Tallahassee is just ever-so-slightly north of another state capital. Austin, Texas, sits at 30°16'2" N, a fraction of a degree south of Tallahassee, which is located at 30°27'18" N. That makes Austin the southernmost state capital in the continental U.S. — but not, it should be noted, the southernmost state capital overall. That title goes to Hawaii's Honolulu, which has a latitude of 21°18'25" N but is not included in the continental U.S.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.