Which of the following Countries and States touch the borders of Sikkim State…

Concept

A political-boundary question is solved by separating international neighbours from domestic neighbours and then checking each direction. A border exists only when two territories share a continuous boundary; geographic proximity alone is not enough.

Application

For Sikkim, inspect the map direction by direction: the Tibet Autonomous Region of China lies to the north and northeast, Bhutan to the east and southeast, Nepal to the west, and West Bengal to the south.

Contrast

• Arunachal Pradesh lies farther east beyond Bhutan and does not share Sikkim’s state boundary, although Nepal and China are relevant Himalayan neighbours.

• Bihar and Bangladesh lie beyond West Bengal rather than on Sikkim’s boundary.

• Assam, Bihar, Jharkhand, and Bangladesh are separated from Sikkim by intervening territory.

Cross-check

The four-direction list from the Government of Sikkim accounts for every side—north and northeast, east, west, and south—and matches one offered set without an extra territory.

Therefore, the bordering territories are Tibet (China), Bhutan, Nepal, and West Bengal.