Question

If only nine of the thirteen states were needed to pass the new government, why was it important that all states support the constitution?

Answer 1

It was important for all of the states to support the Constitution because of national unity. The earlier debates over the Articles of Confederation meant the new nation needed a consensus about its constitutional structure. An affirmative and all inclusive vote signaled consensus and agreement in the new Republic.

Answer 2

It was important in the sense that the states which did not support the constitution were likely to succeed from the union.