The answer to this question is " the FOURTH YEAR" such as some researchers speculate that after a significant drop in chemicals that result in the "passion high" divorce rates peak during the FOURTH YEAR of marriage. Marriages or romances that go beyond the four mark years give the couples the feeling of security, peace and calm where we could say they have passed the most crucial stage of marriage life.
The current form of American government is very flawed, but it is effective in the sense that it is capable of changing without revolution, which is the most important element of any government.