Border disputes have been an ongoing issue for Meghalaya, primarily with the state of:

Assam
Nagaland
Mizoram
Manipur

The correct answer is: a) Assam.

Border disputes have been an ongoing issue for Meghalaya, primarily with the state of Assam. The two states have been unable to agree on the exact location of their shared border, and this has led to a number of incidents of violence and tension. In 2018, the Supreme Court of India ordered the two states to resolve their border dispute through negotiations. However, the two states have been unable to reach an agreement, and the border dispute remains unresolved.

The border dispute between Meghalaya and Assam is a complex issue with a long history. The two states share a long border, and there are a number of areas where the exact location of the border is disputed. This has led to a number of incidents of violence and tension between the two states.

In 2018, the Supreme Court of India ordered the two states to resolve their border dispute through negotiations. However, the two states have been unable to reach an agreement, and the border dispute remains unresolved.

The border dispute between Meghalaya and Assam has a number of negative consequences. It has led to violence and tension between the two states. It has also hampered economic development in the region. The two states are unable to cooperate on a number of issues, such as infrastructure development and trade.

The border dispute between Meghalaya and Assam is a complex issue with a long history. It is a major source of tension between the two states. It has a number of negative consequences, such as violence, tension, and economic development. The two states need to resolve their border dispute in order to improve relations and promote economic development in the region.

The other options are incorrect because they do not border Meghalaya.