The first major outbreak came in Palermo, Sicily, starting in January 1848. There had been several previous revolts against Bourbon rule; this one produced an independent state that lasted only 16 months before the Bourbons came back.
The events of 1848 were the product of mounting social and political tensions after the Congress of Vienna of 1815. During the "pre-March" period, the already conservative Austrian Empire moved further away from ideas of the Age of Enlightenment, restricted freedom of the press, limited many university activities, and banned fraternities.
On 5 January 1848, the revolutionary disturbances began with a civil disobedience strike in Lombardy, as citizens stopped smoking cigars and playing the lottery, which denied Austria the associated tax revenue. Shortly after this, revolts began on the island of Sicily and in Naples.
In January 1848 during a period of rising opposition from farmers and liberals. The demands for constitutional monarchy, led by the National Liberals, ended with a popular march to Christiansborg on 21 March. The new king, Frederick VII, met the liberals' demands and installed a new Cabinet that included prominent leaders of the National Liberal Party.