Answer:
The inability of the Articles of Confederation to raise an army.
Explanation:
Shays Rebellion states that the flaws in the Articles of Confederation, specifically the inability to raise an army as well as the inability to levy taxes which is for the national government,it realized that it was weak so it switched to the constitution, to proves her point because it was resolving most of the past errors or conflicts like the Shays Rebellion as well as to prevent the tyranny in the form of the representative government that is what she believed the constitution was meant for.
