page_title: Canton of Aargau
section_title: Forming the canton of Aargau
hierarchical_section_title: Canton of Aargau / History / Forming the canton of Aargau
caption_attribution_description: Deutsch: Die Schweizerische Eidgenossenschaft während der Mediationszeit 1803–1814
context_page_description: The canton of Aargau is one of the more northerly cantons of Switzerland. It is situated by the lower course of the Aare River, which is why the canton is called Aar-gau. It is one of the most densely populated regions of Switzerland.
context_section_description: The contemporary canton of Aargau was formed in 1803, a canton of the Swiss Confederation as a result of the Act of Mediation. It was a combination of three short-lived cantons of the Helvetic Republic: Aargau (1798–1803), Baden (1798–1803) and Fricktal (1802–1803). Its creation is therefore rooted in the Napoleonic era. In the year 2003, the canton of Aargau celebrated its 200th anniversary.
  French forces occupied the Aargau from 10 March to 18 April 1798; thereafter the Bernese portion became the canton of Aargau and the remainder formed the canton of Baden. Aborted plans to merge the two halves came in 1801 and 1802, and they were eventually united under the name Aargau, which was then admitted as a full member of the reconstituted Confederation following the Act of Mediation. Some parts of the canton of Baden at this point were transferred to other cantons: the Amt of Hitzkirch to Lucerne, whilst Hüttikon, Oetwil an der Limmat, Dietikon and Schlieren went to Zürich. In return, Lucerne's Amt of Merenschwand was transferred to Aargau (district of Muri).
  The Fricktal, ceded in 1802 by Austria via Napoleonic France to the Helvetic Republic, was briefly a separate canton of the Helvetic Republic (the canton of Fricktal) under a Statthalter ('Lieutenant'), but on 19 March 1803 (following the Act of Mediation) was incorporated into the canton of Aargau.
  The former cantons of Baden and Fricktal can still be identified with the contemporary districts – the canton of Baden is covered by the districts of Zurzach, Baden, Bremgarten, and Muri (albeit with the gains and losses of 1803 detailed above); the canton of Fricktal by the districts of Rheinfelden and Laufenburg (except for Hottwil which was transferred to that district in 2010).
caption: Swiss Confederation following the 1803 Act of Mediation, with the modern canton of Aargau formed
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