Answer:
Three reasons why the Articles of Confederation were abandoned:
1. The central government could not collect taxes. It depended on voluntary donations from the states, and as a consequence, it was permanently broke.
2. It could not keep an standing army - It depended on voluntary or temporary recruits, and as a consequence, the central goverment was weak and defenseless.
3. It could conduct a coherent and unified foreign policy. Invidual states could pursue their own foreign policy, for example, some states favored isolationism over interventionism and viceversa.