Montana Code > Title 7 > Chapter 3 > Part 1 > § 7-3-121 Montana Code 7-3-121. Purpose Current as of: 2023 | Check for updates | Other versions 7-3-121. Purpose. The purpose of 7-3-121 through 7-3-123, 7-3-125, and 7-3-141 through 7-3-161 is to provide procedures for alteration of existing forms of local government. Previous Next Part 1 Contents