For practicality as well as to secure legitimacy for their proposed government, the delegates to the Constitutional Convention declared that the proposed Constitution would go into effect once it was ratified by how many states?

Nine States

Explanation:

Constitutional Convention is a gathering for the purpose to writing a new constitution or revising an existing one. the convention took place from May 14 to September 17, 1787 in Philadelphia, Pennsylvania.

Delaware was the first state to ratified

Pennsylvania,

New Jersey ,

Georgia,

Connecticut,

Massachusetts,

South Caroline,

New Hampshire was the last state to ratified

the atm that sounds like it should be the answer

answer; reactive is your answer; good luck