Answer:
B. A buffer zone.
Explanation:
A superimposed boundary can be defined as the boundary imposed on a geographical region or area by a colonizing, conquering or an external power and as a result of this, the preexisting cultural organizations and patterns are completely ignored
In the early nineteenth-century, the Spanish create a buffer zone and borderlands in North America to protect its colonies from other Europeans. Therefore, this buffer zone and borderlands prevented illegal immigrants and infiltration by the British empire.
