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
Switzerland free trade agreements worldwide. Switzerland is a member of the European Free Trade Association (EFTA). Education in Switzerland is very diverse because the constitution of Switzerland delegates the authority for the school system to the cantons. There are both public and private schools, including many private international schools. The minimum age for primary school is about six years in all cantons, but most cantons provide a free "children's school" starting at four or five years old. Primary school continues until grade four, five or six, depending on the school. Traditionally, the first foreign language in school was always one of