Lombardy-Venetia was quickly brought back under Austrian rule in the mainland, even because popular support for the revolution vanished: revolutionary ideals were often limited to part of middle and upper classes, which failed both to gain "hearts and minds" of lower classes and to convince the population about Italian nationalism. Most part of lower classes indeed were quite indifferent, and actually most part of Lombard and Venetian troops remained loyal.[8] The only widespread support to the revolution was in the cities of Milan and Venice, with the Republic of San Marco lasting under siege until 28th of August, 1849.