Alexander I dies, succession crisis beginsDec 1, 1825Labels: Alexander I, InterregnumWiki InterregnumImperial House
Nicholas issues manifesto announcing accessionDec 12, 1825Labels: Nicholas I, ManifestoImperial HouseWiki 1825
Chernigov Regiment revolt erupts in UkraineDec 29, 1825Labels: Chernigov Regiment, UkraineWiki Chernigov29th Regiment
Southern revolt is defeated by government forcesJan 3, 1826Labels: Southern Revolt, Government forces29th RegimentWiki Chernigov
Nicholas creates Third Section secret policeJul 15, 1826Labels: Third Section, Nicholas IBritannicaWiki Third Section
Five Decembrist leaders executed in St. PetersburgJul 25, 1826Labels: Executed leaders, Peter andRyleyevExecuted Today
First Decembrist wives reach Siberian exileSep 16, 1826Labels: Yekaterina Trubetskaya, Siberian exileRussia ICWiki Decembrists
Official ideology formulated: “Orthodoxy, Autocracy, Nationality”Dec 1, 1832Labels: Uvarov Doctrine, Orthodoxy AutocracyBritannicaCambridge
Digest of Laws takes effect, consolidating autocratic legalityJan 1, 1835Labels: Digest of, Legal codificationDigest LawsIllinois Lib