What was required for an amendment to be passed under the Articles of Confederation?

Under the Articles of Confederation, amending the document required a unanimous vote among all thirteen states. This high threshold was established to ensure that any changes reflected the consensus of all member states, promoting unity and cooperation. Given that the Articles were created to establish a cooperative union among the states, requiring complete agreement was intended to safeguard the rights and interests of all states, preventing any significant alterations without universal consent.

This requirement, however, also contributed to the shortcomings of the Articles, as it made it exceedingly difficult to adapt or improve the governing framework in response to evolving circumstances. Thus, while the unanimous vote was intended to foster collaboration, it ultimately hampered the ability to make necessary amendments.