Consider the following states:
1. Sikkim
2. Tripura
3. Himachal Pradesh
4. Mizoram
Which of the above have international land borders?

Tripura is bordered by Bangladesh (East Bengal) to the north, south and west, and the Indian states of Assam and Mizoram to the east. Himachal Pradesh is bounded by the Tibet Autonomous Region on the east. Mizoram has international borders with Bangladesh and Myanmar. Sikkim is bordered by Nepal to the west, China's Tibet Autonomous Region to the north and east, and Bhutan to the east.