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French Consulate

On 15 December, Bonaparte introduced the Constitution of the Year VIII, under which three consuls were appointed for 10 years. Real power lay with Bonaparte as First Consul, and his preferred candidates Cambacérès and Charles-François Lebrun were appointed as second and third consuls who only had an advisory role. The constitution also established a Legislative Body and Tribunate which were selected from indirectly elected candidates, and a Senate and Council of State which were effectively nominated by the executive.

The new constitution was approved by plebiscite on 7 February 1800. The official count was over three million in favour and 1,562 against. Lucien, however, had doubled the count of the "yes" vote to give the false impression that a majority of those eligible to vote had approved the constitution.

Historians have variously described Bonaparte's new regime as "dictatorship by plebiscite," "absolutist rule decked out in the spirit of the age," and "soft despotism." Local and regional administration was reformed to concentrate power in the central government, censorship was introduced, and most opposition newspapers were closed down to stifle dissent. Royalist and regional revolts were dealt with by a combination of amnesties for those who lay down their arms and brutal repression of those who continued to resist. Bonaparte also improved state finances by securing loans under a promise to defend private property, raising taxes on tobacco, alcohol and salt, and extracting levies from France's satellite republics.

Bonaparte believed that the best way to secure his regime was by a victorious peace. In May 1800, he led an army across the Swiss Alps into Italy, aiming to surprise the Austrian armies that had reoccupied the peninsula when Bonaparte was still in Egypt. After a difficult crossing over the Alps, the French captured Milan on 2 June.

The French confronted an Austrian army under Michael von Melas at Marengo on 14 June. The Austrians fielded about 30,000 soldiers while Bonaparte commanded 24,000 troops. The Austrians' initial attack surprised the French who were gradually driven back. Late in the afternoon, however, a full division under Desaix arrived on the field and reversed the tide of the battle. The Austrian army fled leaving behind 14,000 casualties. The following day, the Austrians signed an armistice and agreed to abandon Northern Italy.

When peace negotiations with Austria stalled, Bonaparte reopened hostilities in November. A French army under General Moreau swept through Bavaria and scored an overwhelming victory over the Austrians at Hohenlinden in December. The Austrians capitulated and signed the Treaty of Lunéville in February 1801. The treaty reaffirmed and expanded earlier French gains at Campo Formio.

Bonaparte's triumph at Marengo increased his popularity and political authority. However, he still faced royalist plots and feared Jacobin influence, especially in the army. Several assassination plots, including the Conspiration des poignards (Dagger plot) in October 1800 and the Plot of the Rue Saint-Nicaise two months later, gave him a pretext to arrest about 100 suspected Jacobins and royalists, some of whom were shot and many others deported to penal colonies.