Again, there was a peculiarity in their situation, which rendered it quite different from that of the delegates of a people who had abolished a pre-existing government, and had assembled a representative body to form a new one. The Confederation still existed. As a compact between sovereign States, providing for a special mode in which alterations of its articles were to be made, and limiting their adoption to the case of unanimous consent, it was still in force. The States, in their political capacities as sovereign communities, were still the parties to the compact, and their legislatures alone were clothed with the authority to change its provisions. It was necessary, therefore, to encounter and to solve the question, whether a new government, framed upon a principle unlike that of the Confederation, and embracing an entirely different legislative authority, could be established in the mode prescribed by the existing compact of the States; and if it could not, whether there existed any power, apart from the State governments, by which it could be established and be clothed with a paramount authority, resting on a basis of principle, and not upon force, fiction, or fraud. In the early formation of the Union that took place before the Declaration of Independence, questions of the constitutional power of the Colonies which became members of it could scarcely arise at all, since those who undertook to act for and to represent the people of each Colony were proceeding upon revolutionary principles and rights. But before the Articles of Confederation, which constituted the first union of the States upon ascertained and settled principles of government, had been agreed upon, many of the State constitutions were formed; and when those Articles were entered into, the State governments represented the sovereignty of distinct political communities, and were entirely competent to form such a confederacy as was then established by their joint and unanimous consent. All the obligations which the Confederation imposed upon its members rested upon the States in their corporate capacities; and the government of each of them was competent to assume, for the State, such obligations, and to enter into such stipulations. In the same way, it was competent to the State governments to make alterations in the Articles of Confederation, by unanimous consent, so long as those alterations did not change the fundamental principle of the Union, which was that of a system of legislation for the States in their corporate capacities.