Which provision of the Articles of Confederation most directly led to the Constitutional Convention of 1787?

Core Concept

The requirement for unanimous consent to amend the Articles of Confederation made any changes nearly impossible to achieve. When states disagreed on amendments (as they frequently did), no progress could be made. This fundamental flaw, combined with other weaknesses like the inability to tax or regulate commerce, led to the calling of the Constitutional Convention in 1787 to revise the Articles, ultimately resulting in their replacement by the U.S. Constitution.