N.D. Cent. Code § 54-40.5-04
An agreement may be amended by further agreement of the parties in the same manner as the original agreement was made. An agreement may be terminated as provided in the agreement or, if no provision is made for the termination, by joint action of all parties, or by an individual party not less than one year after its notice in writing to all other parties. If a political subdivision that is a party to the agreement is dissolved, the agreement may be terminated as provided in this section by the governing body of the political subdivision upon its reincorporation or reestablishment, by a petition submitted to the county and signed by a majority of the electors residing within the previous territorial jurisdiction of the dissolved political subdivision, or in some other manner specified in the agreement.
A township or city that unilaterally transferred its zoning authority to the county may reacquire that zoning authority by mutual agreement between the board of county commissioners and the board of township supervisors or city governing body.
N.D.C.C. § 54-40.5-04