The Articles of Confederation was an agreement among all thirteen original states in the United States that served as its first constitution. It was approved by the Continental Congress this date in 1777. The formal ratification by all thirteen states was completed in early 1781. Government under the Articles was superseded by a new constitution and federal form of government in 1789.
Even unratified, the Articles provided a system for the Continental Congress to direct the American Revolutionary War, conduct diplomacy with Europe and deal with territorial issues and Native American relations. The new Constitution provided a much stronger federal government by establishing a chief executive (the President), courts and taxing powers. (from Wikipedia and cutecalendar.com)