Dissolution of marriage is generally another term for divorce—but in some states it specifically refers to an uncontested divorce—a no fault divorce with a written separation agreement. And in California, for example, there is a summary dissolution that provides an expedited process under limited circumstances (California Family Code §2400).
The laws regarding various methods for dissolving a marriage are usually located in a state’s statutes—often in the Family Code or Domestic Relations Code.
In Montana, dissolution of marriage is indeed another term for divorce. Montana allows for no-fault divorces, which means that a spouse can file for divorce without having to prove any wrongdoing by the other spouse, and the reason for the divorce is typically cited as 'irretrievable breakdown' of the marriage. The process is governed by the Montana Code Annotated (MCA), specifically Title 40, which covers family law. Unlike California's summary dissolution, Montana does not have a specific 'summary dissolution' process, but it does offer a relatively straightforward process for an uncontested divorce. If both parties agree on all terms of the divorce, including division of property, child custody, and support, they may proceed with a dissolution of marriage without a trial. The necessary forms and instructions for dissolution of marriage are provided by the Montana Judicial Branch on their website. It's important to note that even in an uncontested divorce, the parties may still benefit from consulting with an attorney to ensure their rights and interests are adequately represented.