Constitution until 1891 (when it was given to 50,000 Swiss citizens) and then only as to a partial (not a total) revision of that constitution. Industrialisation and economic growth The 1847 to 1914 period saw the development of the Swiss railway network. The Schweizerische Nordbahn (SNB) society opened the first railway line on Swiss soil in 1847, connecting Zürich and Baden. The Gotthard Rail Tunnel was completed in 1881. The Swiss watchmaking industry has its origins in the 18th century, but boomed during the 19th century, turning the village of La Chaux-de-Fonds into an industrial center. Rapid urban growth also enlarged Zürich, which incorporated its industrial suburb Aussersihl into the municipality in 1891. Banking emerged as a significant factor in Swiss economy with the foundation of the Union Bank of Switzerland in 1862, the Swiss Bank Corporation in 1872. The golden age of alpinism in the 1850s to 1860s laid the foundation to the tourism industry. See also Federalism in Germany Enlargement of Switzerland Alemannic separatism Notes and references External links A Very Civil War: The Swiss Sonderbund War of 1847 Federal state 19th century in Switzerland 20th century in Switzerland 1848 establishments in Europe States and territories established in 1848 Federalism by country de:Bundesverfassung (Schweiz)#Geschichte