'Léman' was the name of a ''
département'' of the
First French Empire. Its name is the French name of
Lake Geneva (''Lac Léman''). It was formed in
1798, when the republic of
Geneva was occupied by the French. Léman also included districts that were previously part of the ''départements''
Mont-Blanc (northern
Savoy) and
Ain (around
Gex).
The capital of Léman ''département'' was
Geneva. The ''département'' was subdivided into the
arrondissements of Geneva,
Bonneville and
Thonon-les-Bains. Its territory corresponds with the present
Swiss canton of Geneva and parts of the present French ''départements'' Ain and
Haute-Savoie.
After the final defeat of
Napoleon Bonaparte in
1815, the former republic of
Geneva became a
Swiss canton, and Savoy was returned to the
Kingdom of Sardinia. The area around Gex returned to Ain ''département''.