In order for the Constitution to be formally adopted, 9 of the 13 states in the Union had to agree to its terms.
Step-by-step explanation:
The Articles of the Confederation and the Perpetual Union were a first Constitutional compromise between the 13 original States of the United States.
On 1 March 1781, after being ratified by all 13 States, the Articles of Confederation entered into force. The idea of maintaining independence and sovereignty of States was the guiding principle for the Articles.
On June 21, 1788, when New Hampshire ratified it, the constitution was officially passed in the US, the ninth state. The first congress was conducted in New York on 4 March 1789 under the new Constitution, even if a quorum did not exist until early April.