The main idea of the Articles of Confederation was to make the states come together. Many people of the nations had agreed, but some people did not understand the complete purpose of this new government. many of the strengths were that the nation was able to make peace/declare war with other nations. It encouraged cooperation with other states. But where there is strengths there are also weaknesses.
The Articles of Confederation had made it to where each state had only one vote whether the size of the state. They did not allow trade or commerce between states, but each state was able to apply tax on their goods. They had no President, which had led to weakness of leadership. They had no army or navy which would help defend against foreign attacks. They also had no national courts, which meant that they would have no trial.
Of course, the Articles of Confederation was of course later changed with the Constitution. Imagine what our nation would be like if we had based our government with the Articles of Confederation!