Cantons of Switzerland the canton of Schwyz. Six of the 26 cantons are traditionally, but no longer officially, called "half-cantons" (, , , ). In two instances (Basel and Appenzell) this was a consequence of a historic division, whilst in the case of Unterwalden a historic mutual association, resulting in three pairs of half-cantons. The other 20 cantons were — and in some instances still are — though only in a context where it is needed to distinguish them from any half-cantons, typically termed "full" cantons in English. The historic half-cantons, and their pairings, are still recognizable in the first article of the
Cantons of Switzerland in the formation of Switzerland as a federal state in 1848. The cantons retained far-reaching sovereignty, but were no longer allowed to maintain individual standing armies or international relations. As the revolutions of 1848 in Western Europe had failed elsewhere, Switzerland during the later 19th century (and with the exception of the French Third Republic, until the end of World War I) found itself as an isolated democratic republic, surrounded by the restored monarchies of France, Italy, Austria-Hungary and Germany. The Swiss Federal Constitution declares the cantons to be sovereign to the extent that their sovereignty is not limited by