Final answer:
Approval from nine colonies was needed for major decisions.
Step-by-step explanation:
One major flaw of the Articles of Confederation in terms of decision-making was that approval from nine colonies was needed for major decisions. This requirement made the decision-making process slow and hindered the ability of the central government to address urgent issues. For example, if there was an important decision that required immediate action, it would be difficult to gather the necessary approval from nine colonies in a timely manner.
Learn more about Articles of Confederation