Final answer:
The Annapolis Convention failed due to insufficient representation, which highlighted the inadequacies of the Articles of Confederation, but it set the stage for the Constitutional Convention where the U.S. Constitution was created.
Step-by-step explanation:
The Annapolis Convention in September 1786 was not successful primarily because of low attendance; only five states sent representatives, far fewer than the thirteen needed to amend the Articles of Confederation. This underrepresentation made it impossible to reach any substantial agreement or enact changes. The Convention's inability to address the pressing economic and commercial issues of the time demonstrated the weaknesses of the Articles of Confederation and underscored the need for a stronger federal government. Despite the setback, the meeting was pivotal as it led to the calling of the Constitutional Convention in Philadelphia in 1787, where the current U.S. Constitution was drafted.