The declaration states that all humans are entitled to basic rights including life, liberty, and the pursuit of happiness. It also states that if the government withholds these basic rights from citizens, citizens have the right to revolt against the government.
The declaration says that the ultimate power in a nation rests with its people.
The only lawmaking body that existed under the Articles of Confederation was the "Congress," since the Founding Fathers initially wanted to have a very "weak" central government over the states.