(A) Wadi Halfa Salient
(C) Bajo Nuevo Bank
(D) None of these
(B) Nagorno-Karabakh
🧠 Explanation:
- Nagorno-Karabakh is a disputed border region claimed by both Armenia and Azerbaijan.
- It has been the center of ethnic and territorial conflict, especially after the collapse of the Soviet Union.
- Although internationally recognized as part of Azerbaijan, the region has a majority Armenian population and declared independence, which is not widely recognized.
- This long-standing conflict involves political, ethnic, and historical tensions, making it a classic example of a disputed border region.