Question

how do you think we get the eastern and Western hemisphere?​

Answer 1

Answer:

In geography and cartography, the hemispheres of Earth refer to any division of the globe into two hemispheres (from Ancient Greek hēmisphairion, meaning "half of a sphere").

The most common such divisions are by latitudinal or longitudinal markers[1]:

North–South

Northern Hemisphere, the half that lies north of the Equator

Southern Hemisphere, the half that lies south of the Equator

East–West

Eastern Hemisphere, the half that lies east of the prime meridian and west of the 180th meridian

Western Hemisphere, the half that lies west of the prime meridian and east of the 180th meridian

The East–West division can also be seen in a cultural sense, as a division into two cultural hemispheres.