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
Switzerland in the Napoleonic era cantons with equal rights. The Congress of Vienna of 1815 fully re-established Swiss independence and the European powers agreed to permanently recognise Swiss neutrality. At this time, the territory of Switzerland was increased for the last time, by the new cantons of Valais, Neuchâtel and Geneva. The Restoration, the time leading up to the "Sonderbundskrieg", was marked with turmoil, and the rural population struggling against the yoke of the urban centres, for example in the Züriputsch of 1839. During the last years of the Ancien Régime, the growing conflicts throughout the Confederation (aristocratic cities against peasant farmers, Protestant against Catholic,