Distinguish between grid and arbitrary
grid system

Any reference system developed for use where no grid is available or practical, or where military security for the reference is desired is termed as Arbitrary grid.

Answer. Explanation: Any reference system developed for use where no grid is available or practical, or where military security for the reference is desired is termed as Arbitrary grid. A grid is a network of evenly spaced horizontal and vertical lines used to identify locations on a map. ...

niger

explanation:

bc its the main river

i do believe that its called,(the segovia highlands); plz check first good luck;