Which one country did not share its border with Arunachal Pradesh?

Arunachal Pradesh is a state in northeastern India, known for its rich biodiversity and cultural heritage. The geographical location of Arunachal Pradesh is significant in understanding its geopolitical relationships with neighboring countries. The state shares its borders with three countries: China, Bhutan, and Myanmar.

China borders Arunachal Pradesh to the north and northeast, with the McMahon Line serving as the de facto border between the two. This border is a subject of ongoing territorial disputes between India and China. Bhutan shares a border with Arunachal Pradesh to the west, and Myanmar borders the state to the east. These borders are well-defined and recognized by international standards.

Nepal, on the other hand, is located to the west of Arunachal Pradesh, but it does not share a direct border with the state. Nepal is separated from Arunachal Pradesh by the state of Sikkim and the country of Bhutan. This geographical separation means that Nepal is not a neighboring country of Arunachal Pradesh in terms of direct border sharing.

Understanding the geographical layout of northeastern India is crucial for comprehending the geopolitical dynamics of the region. The borders of Arunachal Pradesh are significant not only for the state's internal administration but also for its international relations. The presence of multiple international borders makes Arunachal Pradesh a strategically important region, particularly in the context of India's relations with its neighbors.

In summary, while Arunachal Pradesh shares borders with China, Bhutan, and Myanmar, Nepal does not share a border with the state. This makes Nepal the correct answer to the question of which country does not share a border with Arunachal Pradesh.