Explanations:The question asks about the common neighboring country that shares a border with the Indian states of Uttarakhand, Uttar Pradesh, Bihar, West Bengal, and Sikkim. To understand this, it is essential to know the geographical location and the borders of these states.
Uttarakhand is located in the northern part of India and shares a border with Nepal to the north and west. Uttar Pradesh, which is adjacent to Uttarakhand, also shares a border with Nepal to the north and west. Bihar, situated to the east of Uttar Pradesh, shares a border with Nepal to the north. West Bengal, located to the east of Bihar, shares a border with Nepal to the north and northwest. Sikkim, located in the northeastern part of India, shares a border with Nepal to the west.
Therefore, Nepal is the common neighboring country that shares a border with all these states. Nepal is a landlocked country located in South Asia, and it is bordered by India to the south, east, and west, and by China to the north. The border between Nepal and India is approximately 1,751 kilometers long, and it is one of the longest international borders in the world.
It is important to note that while other countries like China, Bhutan, and Myanmar share borders with some of these Indian states, they do not share borders with all of them. For example, China shares a border with Uttarakhand and Sikkim, but not with Uttar Pradesh, Bihar, and West Bengal. Bhutan shares a border with Sikkim and West Bengal, but not with the other states. Myanmar does not share a border with any of the listed states.
Understanding the geographical location and the borders of these states is crucial for answering questions related to their neighboring countries. This knowledge is often tested in various competitive examinations, including UPSC, SSC, Bank PO, and CLAT, where candidates are expected to have a good grasp of the geographical layout of India and its neighboring countries.