Which King signed the Treaty of Accession for merging Manipur into India

With which country, Manipur shares its border

With reference to the special provisions made under article 371, consider the following matches:
1. Article 371A - Nagaland
2. Article 371B - Assam
3. Article 371C - Manipur
4. Article 371D - Mizoram
Which of the above matches is / are correct?

With reference to the special provisions made under article 371, consider the following matches:
1. Article 371A - Nagaland
2. Article 371B - Assam
3. Article 371C - Manipur
4. Article 371D - Mizoram
Which of the above matches is / are correct?

With reference to the increasing shortage and price of the black rice in Manipur, consider the following statements:
1. This rice variety is indigenous to Manipur.
2. Anthocyanins are responsible for the rice's coloration.
Which of the above statements is/are correct?