How many of rhe thirteen states needed to approve a low before it could passed, under the articles of confederation?

At least Nine of thirteen states need to approve the law under article of confederation. Article of confederation was the first constitution of United States came into force from March 1, 1781 to June 21, 1788 which was written document, according to which government functions in United states who gives powers to state to approve or Amend the articles by proving majority.

nine out of thirteen