The crossword solution for the term 'Northeast India State In' is ASSAM, which is a state located in the northeastern region of India. It is bordered by Bhutan and Arunachal Pradesh to the north, Nagaland and Manipur to the east, Meghalaya, Tripura, Mizoram and Bangladesh to the south, and West Bengal to the west. Assam is known for its rich cultural heritage, diverse wildlife, and tea plantations.