They both do.
Any line of longitude (or of latitude, for that matter), that crosses the United States, will divide it in two.
Yes
yes the equator
it is the imaginary line that divide the mountain longitude is from up to down is the direction while the latitude is from west to east AM I RIGHT
Every line of longitude intersects with every line of latitude and vic-versa.
No, longitude (the prime meridian) divides the earth into eastern and western hemispheres.
grid line
No,it is a line of latitude
it is a latitude
No, the international date line is a line of longitude, not latitude.
The Prime Meridian is a longitude line, made up of all the points that have zero longitude and every latitude.
No, its the longitude line. Its 0 degress longitude.