Oct–Dec 1820Holy Alliancedenounces revolution
12 Jan–12 May 1821Holy Alliance agrees toAustrian interventionin Two Sicilies
2 Feb–7 Jun 1821Rebellion inwestern Wallachia
6 Mar–29 Jun 1821Greek-led revolt inMoldavia & Wallachia
7 Mar–18 Oct 1821Austria intervenesin Two Sicilies
10 Mar–8 Apr 1821Piedmont revolts;suppressed withAustrian help
29 Mar 1821–27 Jan 1822Greek revolutionariesexpel Ottoman forcesfrom Greece
22 Apr 1821Ottomans executePatriarch ofConstantinople