The republic was dissolved after the defeat of France by the Second Coalition in April 1799.
It was occupied by General Suvorov's Russian and Austrian forces, which appointed a provisional administration led by the Imperial Commission of the Mantuan Count Luigi Cocastelli.
They departed only on 30 May 1800, just a few days before Napoleon won the Battle of Marengo.

The Cisalpine Republic was restored by Napoleon on 15 Prairial, year VIII (4 June 1800).
On 28 Prairial (17 June), the First Consul appointed an Extraordinary Commission of Government of nine members and a legislative Consulta: the final list of the executive and legislative institutions was published on 5 Messidor (24 June).
On 16 Messidor (6 July) all the acts issued during the Austrian occupation were annulled, and afterwards, the tricolour flag was restored.

Napoleon's new victories gave him a chance to stabilize the political situation in all of northern Italy.
On 3 Vendemiaire, year IX (25 September), the powers of the Extraordinary Commission were concentrated in the hands of a more restricted Committee of Government, composed of three members: Giovan Battista Sommariva, Sigismondo Ruga and Francesco Visconti, reflecting the institution of the French Consulate.
On 21 Vendemiaire (13 October), owing to the refusal of the escaped King Charles Emmanuel IV of Savoy to sign a treaty of peace settling the situation of the occupied Piedmont, Napoleon ordered the annexation of Novara to the republic, shifting its western border from river Ticino to the river Sesia.
After the surrender of Austria and the signing of the Treaty of Lunéville on 9 February 1801, the territory of the republic was extended to the east as well, placing the frontier with the Holy Roman Empire on the river Adige without the exceptions agreed in Campo Formio.
On 23 Floreal (13 May), the territory of the republic was divided into 12 departments, adding Agogna (Novara), restoring Lario and abolishing Adda-e-Oglio.

On 21 Brumaire, year X (12 November), an Extraordinary Cisalpine Consulta was summoned in Lyon.
In January 1802, the Consulta decided to change the name of the State to the Italian Republic, when Napoleon had himself elected president, on 24 January, on the advice of Talleyrand.
Two days later, in a scene officially commemorated by Monsiau, Bonaparte appeared in the Collège de la Trinité of Lyon, attended by Murat, Berthier, Louis Bonaparte, Hortense and Joséphine de Beauharnais, and heard the assembled notables proclaim the Italian Republic.
On 21 Pluviose (10 February), the new constitutional government was proclaimed in Milan by Sommariva and Ruga.
The same day, the Gregorian calendar was restored.
The republic was dissolved after the defeat of France by the Second Coalition in April 1799. It was occupied by General Suvorov's Russian and Austrian forces, which appointed a provisional administration led by the Imperial Commission of the Mantuan Count Luigi Cocastelli. They departed only on 30 May 1800, just a few days before Napoleon won the Battle of Marengo.
The Cisalpine Republic was restored by Napoleon on 15 Prairial, year VIII (4 June 1800). On 28 Prairial (17 June), the First Consul appointed an Extraordinary Commission of Government of nine members and a legislative Consulta: the final list of the executive and legislative institutions was published on 5 Messidor (24 June). On 16 Messidor (6 July) all the acts issued during the Austrian occupation were annulled, and afterwards, the tricolour flag was restored.
Napoleon's new victories gave him a chance to stabilize the political situation in all of northern Italy. On 3 Vendemiaire, year IX (25 September), the powers of the Extraordinary Commission were concentrated in the hands of a more restricted Committee of Government, composed of three members: Giovan Battista Sommariva, Sigismondo Ruga and Francesco Visconti, reflecting the institution of the French Consulate. On 21 Vendemiaire (13 October), owing to the refusal of the escaped King Charles Emmanuel IV of Savoy to sign a treaty of peace settling the situation of the occupied Piedmont, Napoleon ordered the annexation of Novara to the republic, shifting its western border from river Ticino to the river Sesia. After the surrender of Austria and the signing of the Treaty of Lunéville on 9 February 1801, the territory of the republic was extended to the east as well, placing the frontier with the Holy Roman Empire on the river Adige without the exceptions agreed in Campo Formio. On 23 Floreal (13 May), the territory of the republic was divided into 12 departments, adding Agogna (Novara), restoring Lario and abolishing Adda-e-Oglio.
On 21 Brumaire, year X (12 November), an Extraordinary Cisalpine Consulta was summoned in Lyon. In January 1802, the Consulta decided to change the name of the State to the Italian Republic, when Napoleon had himself elected president, on 24 January, on the advice of Talleyrand. Two days later, in a scene officially commemorated by Monsiau, Bonaparte appeared in the Collège de la Trinité of Lyon, attended by Murat, Berthier, Louis Bonaparte, Hortense and Joséphine de Beauharnais, and heard the assembled notables proclaim the Italian Republic. On 21 Pluviose (10 February), the new constitutional government was proclaimed in Milan by Sommariva and Ruga. The same day, the Gregorian calendar was restored.
Cisalpine Republic