A portion of mankind may be said to constitute a nationality if they are united among themselves by common sympathies which do not exist between them and any others--which make them co-operate with each other more willingly than with other people, desire to be under the same government, and desire that it should be government by themselves, or a portion of themselves, exclusively. This feeling of nationality may have been generated by various causes. Sometimes it is the effect of identity of race and descent. Community of language and community of religion greatly contribute to it. Geographical limits are one of its causes. But the strongest of all is identity of political antecedents; the possession of a national history, and consequent community of recollections; collective pride and humiliation, pleasure and regret, connected with the same incidents in the past. None of these circumstances, however, are either indispensable or necessarily sufficient by themselves. Switzerland has a strong sentiment of nationality, though the cantons are of different races, different languages, and different religions. Sicily has hitherto felt itself quite distinct in nationality from Naples, notwithstanding identity of religion, almost identity of language, and a considerable amount of common historical antecedents. The Flemish and the Walloon provinces of Belgium, notwithstanding diversity of race and language, have a much greater feeling of common nationality than the former have with Holland, or the latter with France. Yet in general the national feeling is proportionally weakened by the failure of any of the causes which contribute to it. Identity of language, literature, and, to some extent, of race and recollections, have maintained the feeling of nationality in considerable strength among the different portions of the German name, though they have at no time been really united under the same government; but the feeling has never reached to making the separate states desire to get rid of their autonomy. Among Italians, an identity far from complete of language and literature, combined with a geographical position which separates them by a distinct line from other countries, and, perhaps more than every thing else, the possession of a common name, which makes them all glory in the past achievements in arts, arms, politics, religious primacy, science, and literature, of any who share the same designation, give rise to an amount of national feeling in the population which, though still imperfect, has been sufficient to produce the great events now passing before us, notwithstanding a great mixture of races, and although they have never, in either ancient or modern history, been under the same government, except while that government extended or was extending itself over the greater part of the known world.