The patriotic and just men who participated in the act were influenced by motives far above all sectional jealousies. It was in truth the great event which, by completing for us the possession of the Valley of the Mississippi, with commercial access to the Gulf of Mexico, imparted unity and strength to the whole Confederation and attached together by indissoluble ties the East and the West, as well as the North and the South.
As to Florida, that was but the transfer by Spain to the United States of territory on the east side of the river Mississippi in exchange for large territory which the United States transferred to Spain on the west side of that river, as the entire diplomatic history of the transaction serves to demonstrate. Moreover, it was an acquisition demanded by the commercial interests and the security of the whole Union. In the meantime the people of the United States had grown up to a proper consciousness of their strength, and in a brief contest with France and in a second serious war with Great Britain they had shaken off all which remained of undue reverence for Europe, and emerged from the atmosphere of those transatlantic influences which surrounded the infant Republic, and had begun to turn their attention to the full and systematic development of the internal resources of the Union.
Among the evanescent controversies of that period the most conspicuous was the question of regulation by Congress of the social condition of the future States to be rounded in the territory of Louisiana.
The ordinance for the government of the territory northwest of the river Ohio had contained a provision which prohibited the use of servile labor therein, subject to the condition of the extraditions of fugitives from service due in any other part of the United States. Subsequently to the adoption of the Constitution this provision ceased to remain as a law, for its operation as such was absolutely superseded by the Constitution. But the recollection of the fact excited the zeal of social propagandism in some sections of the Confederation, and when a second State, that of Missouri, came to be formed in the territory of Louisiana proposition was made to extend to the latter territory the restriction originally applied to the country situated between the rivers Ohio and Mississippi.
Most questionable as was this proposition in all its constitutional relations, nevertheless it received the sanction of Congress, with some slight modifications of line, to save the existing rights of the intended new State. It was reluctantly acquiesced in by Southern States as a sacrifice to the cause of peace and of the Union, not only of the rights stipulated by the treaty of Louisiana, but of the principle of equality among the States guaranteed by the Constitution. It was received by the Northern States with angry and resentful condemnation and complaint, because it did not concede all which they had exactingly demanded. Having passed through the forms of legislation, it took its place in the statute book, standing open to repeal, like any other act of doubtful constitutionality, subject to be pronounced null and void by the courts of law, and possessing no possible efficacy to control the rights of the States which might thereafter be organized out of any part of the original territory of Louisiana.
In all this, if any aggression there were, any innovation upon preexisting rights, to which portion of the Union are they justly chargeable? This controversy passed away with the occasion, nothing surviving it save the dormant letter of the statute.
But long afterwards, when by the proposed accession of the Republic of Texas the United States were to take their next step in territorial greatness, a similar contingency occurred and became the occasion for systematized attempts to intervene in the domestic affairs of one section of the Union, in defiance of their rights as States and of the stipulations of the Constitution. These attempts assumed a practical direction in the shape of persevering endeavors by some of the Representatives in both Houses of Congress to deprive the Southern States of the supposed benefit of the provisions of the act authorizing the organization of the State of Missouri.
But the good sense of the people and the vital force of the Constitution triumphed over sectional prejudice and the political errors of the day, and the State of Texas returned to the Union as she was, with social institutions which her people had chosen for themselves and with express agreement by the reannexing act that she should be susceptible of subdivision into a plurality of States.
Whatever advantage the interests of the Southern States, as such, gained by this were far inferior in results, as they unfolded in the progress of time, to those which sprang from previous concessions made by the South.
To every thoughtful friend of the Union, to the true lovers of their country, to all who longed and labored for the full success of this great experiment of republican institutions, it was cause of gratulation that such an opportunity had occurred to illustrate our advancing power on this continent and to furnish to the world additional assurance of the strength and stability of the Constitution. Who would wish to see Florida still a European colony? Who would rejoice to hail Texas as a lone star instead of one in the galaxy of States? Who does not appreciate the incalculable benefits of the acquisition of Louisiana? And yet narrow views and sectional purposes would inevitably have excluded them all from the Union.