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
Languages of Switzerland probably mainly due to German (and Austrian) immigrants. By the Middle Ages, a marked difference had developed within the German-speaking part of Switzerland between the rural cantons (Uri, Schwyz, Unterwalden, Glarus, Zug, Appenzell, Schaffhausen) and the city cantons (Lucerne, Berne, Zurich, Solothurn, Fribourg, Basel, St. Gallen), divided by views about trade and commerce. After the Reformation, all cantons were either Catholic or Protestant, and the denominational influences on culture added to the differences. Even today, when all cantons are somewhat denominationally mixed, the different historical denominations can be seen in the mountain villages, where Roman Catholic Central Switzerland abounds with