Mexico is the country on the southern border of the United States.
There are three states in the U.S. that are completely north of 40 degrees north latitude: Maine, New Hampshire, and Vermont.
Maine is located at approximately 45.3 degrees latitude and -69.4 degrees longitude in the northeastern region of the United States.
The only country with a land border with the southern US is Mexico. However, some other nearby countries are Cuba and the Bahamas.
Mexico is the country that lies to the south of the United States.
montana, 48 degrees
At the beginning of the US Civil War, the "southern" border States were Kentucky and Missouri. In this answer, Maryland is excluded in that although it was a pro=southern slave State, it cannot be considered a border State.
Mexico is the country on the southern border of the United States.
In the USA, only four states have any territory at 30 degrees north latitude or south of it. They are Florida, Louisiana, Texas, and Hawaii. Any others are states of Mexico, nations of Central and South America, the south Pacific, southern Asia, or Africa.
The southern most point in the continental United States is Ballast Key, Florida at about 24 degrees north latitude. The southernmost point that is under United States jurisdiction is the Amundsen-Scott South Pole Station in Antarctica which is at 90 degrees South latitude.
Yes there are states located south of 25 degrees N latitude.
Texas and Arkansas each border Louisiana. All three can be described as as "southern States".
Rio Grande forms the Southern border of the United states.
Tokyo is on the 35th parallel. In the United States the 35th parallel defines the southern border of Tennessee, part of the southern border of North Carolina, and the northern borders of Mississippi, Alabama and Georgia. That puts it near the Crystal Coast of the eastern US.
The Missouri Compromise - a line of latitude fixed at Missouri's Southern border.
Arkansas
Tennessee is close. West of Pickwick Lake, it's southern border is about 16 seconds south of 35N. Beginning at Pickwick Lake, the border flips to about 26 seconds north of 35N, and slopes steadily southward as you move east. It crosses 35N in the town of Five Points and continues to slope southward until, at the North Carolina border, it's about 41 seconds south of 35N. Also, from the southeastern corner of Tennessee and eastward, North Carolina's southern border stays within 1 minute of 35N for about 70 miles.