Flags and arms of cantons of Switzerland there is overlap; Unterwalden and Solothurn share the same colours, as do Basel and Appenzell, and with the accession of the modern cantons, Valais and Basel-City, and St. Gallen and Thurgau. Of the 26 cantons since 1999 (22 cantons in 1848, accession of Jura in 1979, three half-cantons designated "canton" in 1999): Distinctively, Swiss cantons use square flags. Historically, the number of cantons was: Nidwalden and Obwalden form traditional subdivisions of Unterwalden. Basel-Stadt and Basel-Landschaft, as well as Appenzell Inner- and Ausserrhoden, are half cantons, resulting from the division of Basel and Appenzell, respectively. The Swiss Federal Constitution of 1999
Cantons of Switzerland six accessions to the early modern Thirteen Cantons being composed of former associates and subject territories: St. Gallen, Grisons, Aargau, Thurgau, Ticino, Vaud). Three additional western cantons, Valais, Neuchâtel and Geneva, acceded in 1815. The process of "Restoration", completed by 1830, returned most of the former feudal rights to the cantonal patriciates, leading to rebellions among the rural population. The Liberal Radical Party embodied these democratic forces calling for a new federal constitution. This tension, paired with religious issues ("Jesuit question") escalated into armed conflict in the 1840s, with the brief Sonderbund War. The victory of the radical party resulted