A more thorough explanation:

The Model Marriage and Divorce Act is a model statute created in 1970 that defines marriage and divorce. It was created by the National Conference of Commissioners on Uniform State Laws to make marriage and divorce laws more uniform across different states in the United States.

The Act was amended in 1973 and introduced the concept of irreconcilable differences as the sole ground for divorce. This means that a couple can get divorced if they can't work out their differences and reconcile their marriage.

Although the Model Marriage and Divorce Act has only been enacted in part in a few states, it has had a significant impact on marriage and divorce laws in all states.

For example, the concept of irreconcilable differences has become a common ground for divorce in many states. This means that couples can get divorced without having to prove that one spouse did something wrong, like committing adultery or abuse.

Overall, the Model Marriage and Divorce Act has helped to make marriage and divorce laws more consistent across different states, and has made it easier for couples to get divorced without having to go through a lengthy and contentious legal process.