once in government, the second triumvirate called for the assembly of year xiii, a constituent body with deputies from the other provinces, that would write a national constitution. the assembly did not claim their sovereignty to be derived from the king, but from the people, in a strong advancement towards popular sovereignty; the mentions to ferdinand vii were removed from public documents as well. by that time, ferdinand vii had returned to the throne of spain, and began the absolutist restoration. the assembly chose the national coat of arms, the national anthem, allowed the use of the modern flag of argentina as a war flag, and printed money. however, it did not declare independence.