According to Kuhn, the set of beliefs, values, assumptions, and a particular way of doing research which are accepted by a group of scientists is called paradigm.
The answer to your question is,
A prime meridian is a meridian in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its antimeridian form a great circle. This great circle divides the sphere, e.g., Earth, into two hemispheres.
-Mabel <3
Legislative, Executive, Judicial
The common I think?
a common was just an open area found in the center of a town.
Hope this Helps!