<P> This debate brought to the forefront one of the contradictions of manifest destiny: on the one hand, while identitarian ideas inherent in manifest destiny suggested that Mexicans, as non-whites, would present a threat to white racial integrity and thus were not qualified to become Americans, the "mission" component of manifest destiny suggested that Mexicans would be improved (or "regenerated", as it was then described) by bringing them into American democracy . Identitarianism was used to promote manifest destiny, but, as in the case of Calhoun and the resistance to the "All Mexico" movement, identitarianism was also used to oppose manifest destiny . Conversely, proponents of annexation of "All Mexico" regarded it as an anti-slavery measure . </P> <P> The controversy was eventually ended by the Mexican Cession, which added the territories of Alta California and Nuevo México to the United States, both more sparsely populated than the rest of Mexico . Like the All Oregon movement, the All Mexico movement quickly abated . </P> <P> Historian Frederick Merk, in Manifest Destiny and Mission in American History: A Reinterpretation (1963), argued that the failure of the "All Oregon" and "All Mexico" movements indicates that manifest destiny had not been as popular as historians have traditionally portrayed it to have been . Merk wrote that, while belief in the beneficent mission of democracy was central to American history, aggressive "continentalism" were aberrations supported by only a minority of Americans, all of them Democrats . Some Democrats were also opposed; the Democrats of Louisiana opposed annexation of Mexico, while those in Mississippi supported it . </P> <P> After the Mexican--American War ended in 1848, disagreements over the expansion of slavery made further annexation by conquest too divisive to be official government policy . Some, such as John Quitman, governor of Mississippi, offered what public support they could offer . In one memorable case, Quitman simply explained that the state of Mississippi had "lost" its state arsenal, which began showing up in the hands of filibusters . Yet these isolated cases only solidified opposition in the North as many Northerners were increasingly opposed to what they believed to be efforts by Southern slave owners--and their friends in the North--to expand slavery through filibustering . Sarah P. Remond on January 24, 1859, delivered an impassioned speech at Warrington, England, that the connection between filibustering and slave power was clear proof of "the mass of corruption that underlay the whole system of American government". The Wilmot Proviso and the continued "Slave Power" narratives thereafter, indicated the degree to which manifest destiny had become part of the sectional controversy . </P>

Which three european countries will garner the greatest influence on the western hemisphere