Final answer:
Under the Articles of Confederation, 9 states were needed to change the government.
Step-by-step explanation:
Under the Articles of Confederation, a minimum of 9 states was needed to change the government. This requirement was outlined in Article XIII of the Articles of Confederation, which stated that any changes to the government, including amendments to the Articles themselves, required the approval of at least 9 out of the 13 states.
Learn more about Articles of Confederation