How did the lack of executive and judicial branches weaken the national government under the articles of confederation?

The lack of an executive branch meant the national government wasn´t able to implement or enforce legislative decisions. The lack of a judicial branch meant there wasn´t a process placed to resolve disputes between states.

Explanation:

Under the Articles of Confederation, the states had substantial power, while the central government was kept weak by only allowing its authority over specific issues. The national government relied on the states to enforce national laws, as well as to regulate trade resolve disputes, and printing money.