Basel-Stadt or Basel-City (German: Kanton ; Romansh: Chantun Basilea-Citad; French: Canton de Bâle-Ville; Italian: Canton Basilea Città) is one of the 26 cantons forming the Swiss Confederation. It is composed of three municipalities with Basel as the capital. It is traditionally considered a "half-canton", the other half being Basel-Landschaft, its rural counterpart. Together with Basel-Landschaft, Basel-Stadt was part of the canton of Basel, who joined the Old Swiss Confederacy in 1501. Political quarrels and armed conflict led to the partition of the canton in 1833.