The fifty years of civil war under which she had languished was due to the bigoted system which was the legacy of monarchy, just as here the inheritance of slavery kept alive political strife, and culminated in civil war. As with us there could be no quiet but through the end of slavery, so in Mexico there could be no prosperity until the crushing tyranny of intolerance should cease. The party of slavery in the United States sent their emissaries to Europe to solicit aid; and so did the party of the Church in Mexico, as organized by the old Spanish council of the Indies, but with a different result. Just as the Republican party had made an end of the rebellion, and was establishing the best government ever known in that region, and giving promise to the nation of order, peace, and prosperity, word was brought us, in the moment of our deepest affliction, that the French Emperor, moved by a desire to erect in North America a buttress for imperialism, would transform the republic of Mexico into a secundo-geniture for the House of Hapsburg. America might complain; she could not then interpose, and delay seemed justifiable. It was seen that Mexico could not, with all its wealth of land, compete in cereal products with our northwest, nor in tropical products with Cuba, nor could it, under a disputed dynasty, attract capital, or create public works, or develop mines, or borrow money; so that the imperial system of Mexico, which was forced at once to recognize the wisdom of the policy of the republic by adopting it, could prove only an unremunerating drain on the French treasury for the support of an Austrian adventurer. Meantime a new series of momentous questions grows up, and forces itself on the consideration of the thoughtful. Republicanism has learned how to introduce into its constitution every element of order, as well as every element of freedom; but thus far the continuity of its government has seemed to depend on the continuity of elections. It is now to be considered how perpetuity is to be secured against foreign occupation. The successor of Charles the First of England dated his reign from the death of his father; the Bourbons, coming back after a long series of revolutions, claimed that the Louis who became king was the eighteenth of that name. The present Emperor of the French, disdaining a title from election alone, calls himself Napoleon the Third. Shall a republic have less power of continuance when invading armies prevent a peaceful resort to the ballot-box? What force shall it attach to intervening legislation? What validity to debts contracted for its overthrow? These momentous questions are, by the invasion of Mexico, thrown up for solution. A free State once truly constituted should be as undying as its people: the republic of Mexico must rise again.