Answer:
The mainland of the United States, which includes the contiguous 48 states, stretches from the extreme point of westernmost Alaska to the extreme point of easternmost Maine. The approximate latitude and longitude of these extreme points are:
Westernmost Alaska: 71.38° N, 179.21° W
Easternmost Maine: 45.29° N, 67.01° W
The latitude of the mainland of the United States ranges from 71.38° N at its westernmost point to 45.29° N at its easternmost point. The longitude of the mainland ranges from 179.21° W at its westernmost point to 67.01° W at its easternmost point.
Overall, the mainland of the United States covers a wide range of latitudes and longitudes, and its extreme points are located at opposite ends of the country.