What territories were ceded to the Austrian Empire by the decisions of the Vienna Congress? What reasons led to the revolution of 1848-1849?

Return of all territories captured by Napoleon:
Austria + returned territories of Italy + Tyrol, Salzburg, Dalmatia.

Causes of revolutions:
1) poor harvest in 1845-1847;
2) the world industrial crisis of 1847;
3) an increase in the number of unemployed and poor.

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