Are there any other constitutional amendments or agreements related to the State of Tripura mentioned elsewhere in this document?
Yes, there are other constitutional amendments and agreements related to the State of Tripura mentioned in this document. The relevant sections include:

1. The First Schedule to the Constitution (One Hundredth Amendment) Act, 2015, specifically Part II which refers to territories related to the State of Tripura.
2. The Constitution (Ninth Amendment) Act, 1960, specifically clause (d) that relates to the territories referred to in Part II of the First Schedule to the Constitution (One Hundredth Amendment) Act, 2015.