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
History of Switzerland became cantons with equal rights. Napoleon and his enemies fought numerous campaigns in Switzerland that ruined many localities. The Congress of Vienna of 1814–15 fully reestablished Swiss independence and the European powers agreed to recognize permanent Swiss neutrality. At this time, Valais, Neuchâtel and Geneva also joined Switzerland as new cantons, thereby extending Swiss territory to its current boundaries. The long-term impact of the French Revolution has been assessed as (by William Martin): On 6 April 1814, the so-called "Long Diet" (delegates from all the nineteen cantons) met at Zurich to replace the constitution. Cantonal constitutions were worked out independently