Red Herring. Signing the treaty meant nothing until approved by the representatives of each individual 'sovereign' state.
Read the Articles some time. In Article 9 it clearly states that the United States will have sole authority to enter into treaties and alliances. Not the 'sovereign states' because that is explicitly forbidden in Article 6. So if Great Britan thought it was signing a treaty with 13 'sovereign and independent states' then it was sadly mistaken. The states had not the authority, only the country did.
Read the Articles some time. In Article 9 it clearly states that the United States will have sole authority to enter into treaties and alliances. Not the 'sovereign states' because that is explicitly forbidden in Article 6. So if Great Britan thought it was signing a treaty with 13 'sovereign and independent states' then it was sadly mistaken. The states had not the authority, only the country did.