jan. 1st 1948
The Constitution of the Northern Mariana Islands became effective on January 1, 1978.
It was a little over twenty-nine months till it became effective.
The delegates to the constitutional convention, which included all of the original colonies except for Rhode Island, decided that the Constitution would become effective after 9 of the 13 states ratified it. However, it would only be effective in states that ratified it.
24 originally, but after a second vote, 30.
The first ten amendments to the Constitution of the United States of America---the Bill of Rights---were ratified effective /December 15, 1791.
Articles of Confederation
Article VII of the US Constitution required 9 states to ratify the Constitution for it to be effective.
Two-thirds (66.6%) of the 13 states were needed to ratify the Constitution. That meant 9 states but all 13 states ratified it with Rhode Island being the last one in 1790.
The Declaration of Independence, in 1776; then the Constitution, becoming effective in 1789
When 9 States had ratified it. when did the constitution become binding?
Delegates The Constitution of the Italian Republic was enacted by the Constituent Assembly on 22 December 1947
Effective government depends on the people being governed. A constitution is merely a written 'contract'. The people and/or governors may interpret that contract as they see fit. Being effective depends on your point of view. What you deem effective may not be true for your neighbour.