v.
(1822) Last of the meetings held by the Quadruple Alliance (Russia, Prussia, Austria, and Britain).
The congress met in Verona, Italy, to consider a request by the alliance's ally, France, to intervene in the revolutionary situation in Spain. The congress agreed to support France if it were attacked by Spain and authorized a French expedition into Spain. However, Britain threatened to use its sea power to prevent interference with the revolts in Spanish America. Increasing discord caused a breakdown in the congress system begun by the alliance in 1815.