What is the difference between articles or confederation and the constitution

The Articles of Confederation was the text that served as the supreme law of the United States from its inception in 1777 to 1788, when the Constitution was ratified.

The Articles of Confederation united the states into a confederation governed by the Confederation Congress, which was made up of representatives of the states on an equal basis. Under this regime, the states kept large quotas of sovereignty, and the Confederation Congress was only in charge of declaring war and forming armies, but it could not collect taxes and it was very difficult for it to apply its resolutions because these could be rejected by the states. This led to a situation of ungovernability, which led to the Philadelphia Convention in 1787, in which the Constitution was created. The Constitution came to solve the problems of governability that existed in the United States, creating a strong federal government under the command of a President, with a Congress to sanction laws and a Judiciary to sanction those who break them. Likewise, the federal government was empowered to collect taxes, thus being able to finance itself without receiving contributions from the states.