Which is the best example of a subsequent superimposed boundary?

Question

Quizplus · Accepted Answer

Subsequent superimposed boundaries are those that are established after the development of the cultural landscape, often by an external power without regard to pre-existing cultural patterns. The borders of former British colonies in Africa are a prime example, as they were drawn by European colonial powers without consideration for the ethnic, linguistic, or cultural divisions that existed among the indigenous peoples.

Which Is the Best Example of a Subsequent Superimposed Boundary