Why was the Articles of Confederation discarded?

A) It failed to ensure states sovereignty

B) It was leading to mobocracy

C) it failed to create a functional national government

D) it lacked a bill of rights

C is correct. The founding fathers were afraid of making government too strong and risk becoming just like Britain so they deliberately made the government extremely weak. Unfortunately the government was so weak that they couldn't do important things like collect taxes or enforce laws.