Answer:
Relic Border
Step-by-step explanation:
A physical border is a naturally occurring barrier between two areas
(rivers, mountain ranges, oceans, and deserts)
An antecedent border is a boundary that already existed before the present settlement in that area occurred (the 49th parallel separating the US and Canada)
A relic border is a boundary that has ceased to function but can still be detected on the cultural landscape. It no longer exists as an international boundary (the Berlin Wall separating East and West Berlin)
A superimposed border is a boundary impose on an area by a conquering or colonizing power that ignores existing cultural landscapes (the division of African countries by the British)
A geometric border is a boundaries drawn based on a grid
system (line of latitude or longitude)