Question

Why was it necessary to establish on internationally accepted and recognised uniform longitude on ' prime meridian' ?

Answer 1

Explanation:

the the prime meridian has it faster Greenwich and England is considered 0 degree longitude.because both of the equator of prime meridian is sand lines they were established by the mankind at same point in human history.

Answer 2

A prime meridian is the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle. This great circle divides a spheroid into two hemispheres. If one uses directions of East and West from a defined prime meridian, then they can be called the Eastern Hemisphere and the Western Hemisphere.